Finding the Fourth Proportional to 12,739,792.50, 17,580,913.65 and 7,016,656.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,739,792.50 : 17,580,913.65 = 7,016,656.50 : x
2. Step 2: Convert to fraction form
   12,739,792.50/17,580,913.65 = 7,016,656.50/x
3. Step 3: Cross multiply
   12,739,792.50x = 17,580,913.65 × 7,016,656.50
4. Step 4: Simplify right side
   12,739,792.50x = 123,359,232,038,211.22
5. Step 5: Solve for x
   x = 123,359,232,038,211.22/12,739,792.50
6. Step 6: Final answer
   x = 9,682,985.97