Finding the Fourth Proportional to 12,788,839.17, 17,660,384.24 and 8,213,132.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788,839.17 : 17,660,384.24 = 8,213,132.16 : x
2. Step 2: Convert to fraction form
   12,788,839.17/17,660,384.24 = 8,213,132.16/x
3. Step 3: Cross multiply
   12,788,839.17x = 17,660,384.24 × 8,213,132.16
4. Step 4: Simplify right side
   12,788,839.17x = 145,047,069,718,435.50
5. Step 5: Solve for x
   x = 145,047,069,718,435.50/12,788,839.17
6. Step 6: Final answer
   x = 11,341,691.59