Finding the Fourth Proportional to 14,436.76, 21,615.18 and 7,401.60

Step by Step Solution

1. Step 1: Write the proportion equation
   14,436.76 : 21,615.18 = 7,401.60 : x
2. Step 2: Convert to fraction form
   14,436.76/21,615.18 = 7,401.60/x
3. Step 3: Cross multiply
   14,436.76x = 21,615.18 × 7,401.60
4. Step 4: Simplify right side
   14,436.76x = 159,986,916.29
5. Step 5: Solve for x
   x = 159,986,916.29/14,436.76
6. Step 6: Final answer
   x = 11,081.91