Finding the Fourth Proportional to 21,552.66, 29,723.72 and 15,088.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,552.66 : 29,723.72 = 15,088.98 : x
2. Step 2: Convert to fraction form
   21,552.66/29,723.72 = 15,088.98/x
3. Step 3: Cross multiply
   21,552.66x = 29,723.72 × 15,088.98
4. Step 4: Simplify right side
   21,552.66x = 448,500,616.61
5. Step 5: Solve for x
   x = 448,500,616.61/21,552.66
6. Step 6: Final answer
   x = 20,809.52