Finding the Fourth Proportional to 23,472.15, 32,391.18 and 13,400.70

Step by Step Solution

1. Step 1: Write the proportion equation
   23,472.15 : 32,391.18 = 13,400.70 : x
2. Step 2: Convert to fraction form
   23,472.15/32,391.18 = 13,400.70/x
3. Step 3: Cross multiply
   23,472.15x = 32,391.18 × 13,400.70
4. Step 4: Simplify right side
   23,472.15x = 434,064,485.83
5. Step 5: Solve for x
   x = 434,064,485.83/23,472.15
6. Step 6: Final answer
   x = 18,492.75