Finding the Fourth Proportional to 14,450.10, 21,680.55 and 5,691.12

Step by Step Solution

1. Step 1: Write the proportion equation
   14,450.10 : 21,680.55 = 5,691.12 : x
2. Step 2: Convert to fraction form
   14,450.10/21,680.55 = 5,691.12/x
3. Step 3: Cross multiply
   14,450.10x = 21,680.55 × 5,691.12
4. Step 4: Simplify right side
   14,450.10x = 123,386,611.72
5. Step 5: Solve for x
   x = 123,386,611.72/14,450.10
6. Step 6: Final answer
   x = 8,538.81