Finding the Fourth Proportional to 14,400.72, 21,588.12 and 7,454.16

Step by Step Solution

1. Step 1: Write the proportion equation
   14,400.72 : 21,588.12 = 7,454.16 : x
2. Step 2: Convert to fraction form
   14,400.72/21,588.12 = 7,454.16/x
3. Step 3: Cross multiply
   14,400.72x = 21,588.12 × 7,454.16
4. Step 4: Simplify right side
   14,400.72x = 160,921,300.58
5. Step 5: Solve for x
   x = 160,921,300.58/14,400.72
6. Step 6: Final answer
   x = 11,174.53