Finding the Fourth Proportional to 15,303,563.69, 21,118,710.56 and 8,688,092.00

Step by Step Solution

1. Step 1: Write the proportion equation
   15,303,563.69 : 21,118,710.56 = 8,688,092.00 : x
2. Step 2: Convert to fraction form
   15,303,563.69/21,118,710.56 = 8,688,092.00/x
3. Step 3: Cross multiply
   15,303,563.69x = 21,118,710.56 × 8,688,092.00
4. Step 4: Simplify right side
   15,303,563.69x = 183,481,300,117,617.50
5. Step 5: Solve for x
   x = 183,481,300,117,617.50/15,303,563.69
6. Step 6: Final answer
   x = 11,989,449.25