Finding the Fourth Proportional to 14,411.76, 21,599.42 and 7,731.69

Step by Step Solution

1. Step 1: Write the proportion equation
   14,411.76 : 21,599.42 = 7,731.69 : x
2. Step 2: Convert to fraction form
   14,411.76/21,599.42 = 7,731.69/x
3. Step 3: Cross multiply
   14,411.76x = 21,599.42 × 7,731.69
4. Step 4: Simplify right side
   14,411.76x = 166,999,980.96
5. Step 5: Solve for x
   x = 166,999,980.96/14,411.76
6. Step 6: Final answer
   x = 11,587.76