Finding the Fourth Proportional to 23,455.20, 32,364.72 and 13,380.96

Step by Step Solution

1. Step 1: Write the proportion equation
   23,455.20 : 32,364.72 = 13,380.96 : x
2. Step 2: Convert to fraction form
   23,455.20/32,364.72 = 13,380.96/x
3. Step 3: Cross multiply
   23,455.20x = 32,364.72 × 13,380.96
4. Step 4: Simplify right side
   23,455.20x = 433,071,023.73
5. Step 5: Solve for x
   x = 433,071,023.73/23,455.20
6. Step 6: Final answer
   x = 18,463.75