Finding the Fourth Proportional to 12,911,987.83, 17,817,967.51 and 7,401,411.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,911,987.83 : 17,817,967.51 = 7,401,411.31 : x
2. Step 2: Convert to fraction form
   12,911,987.83/17,817,967.51 = 7,401,411.31/x
3. Step 3: Cross multiply
   12,911,987.83x = 17,817,967.51 × 7,401,411.31
4. Step 4: Simplify right side
   12,911,987.83x = 131,878,106,249,726.55
5. Step 5: Solve for x
   x = 131,878,106,249,726.55/12,911,987.83
6. Step 6: Final answer
   x = 10,213,617.61