Finding the Fourth Proportional to 14,087.52, 21,116.16 and 7,166.88

Step by Step Solution

1. Step 1: Write the proportion equation
   14,087.52 : 21,116.16 = 7,166.88 : x
2. Step 2: Convert to fraction form
   14,087.52/21,116.16 = 7,166.88/x
3. Step 3: Cross multiply
   14,087.52x = 21,116.16 × 7,166.88
4. Step 4: Simplify right side
   14,087.52x = 151,336,984.78
5. Step 5: Solve for x
   x = 151,336,984.78/14,087.52
6. Step 6: Final answer
   x = 10,742.63