Finding the Fourth Proportional to 12,152,997,494.10, 18,218,017,115.55 and 7,182,536,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,152,997,494.10 : 18,218,017,115.55 = 7,182,536,109.30 : x
2. Step 2: Convert to fraction form
   12,152,997,494.10/18,218,017,115.55 = 7,182,536,109.30/x
3. Step 3: Cross multiply
   12,152,997,494.10x = 18,218,017,115.55 × 7,182,536,109.30
4. Step 4: Simplify right side
   12,152,997,494.10x = 130,851,565,772,283,297,792
5. Step 5: Solve for x
   x = 130,851,565,772,283,297,792/12,152,997,494.10
6. Step 6: Final answer
   x = 10,767,019,892.48