Finding the Fourth Proportional to 15,522.98, 21,423.62 and 8,810.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,522.98 : 21,423.62 = 8,810.72 : x
2. Step 2: Convert to fraction form
   15,522.98/21,423.62 = 8,810.72/x
3. Step 3: Cross multiply
   15,522.98x = 21,423.62 × 8,810.72
4. Step 4: Simplify right side
   15,522.98x = 188,757,366.03
5. Step 5: Solve for x
   x = 188,757,366.03/15,522.98
6. Step 6: Final answer
   x = 12,159.86