Finding the Fourth Proportional to 15,535.24, 21,430.38 and 10,492.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,535.24 : 21,430.38 = 10,492.72 : x
2. Step 2: Convert to fraction form
   15,535.24/21,430.38 = 10,492.72/x
3. Step 3: Cross multiply
   15,535.24x = 21,430.38 × 10,492.72
4. Step 4: Simplify right side
   15,535.24x = 224,862,976.83
5. Step 5: Solve for x
   x = 224,862,976.83/15,535.24
6. Step 6: Final answer
   x = 14,474.38