Finding the Fourth Proportional to 15,510.50, 21,404.76 and 8,437.04

Step by Step Solution

1. Step 1: Write the proportion equation
   15,510.50 : 21,404.76 = 8,437.04 : x
2. Step 2: Convert to fraction form
   15,510.50/21,404.76 = 8,437.04/x
3. Step 3: Cross multiply
   15,510.50x = 21,404.76 × 8,437.04
4. Step 4: Simplify right side
   15,510.50x = 180,592,816.31
5. Step 5: Solve for x
   x = 180,592,816.31/15,510.50
6. Step 6: Final answer
   x = 11,643.26