Finding the Fourth Proportional to 23,898.42, 32,979.90 and 13,288.04

Step by Step Solution

1. Step 1: Write the proportion equation
   23,898.42 : 32,979.90 = 13,288.04 : x
2. Step 2: Convert to fraction form
   23,898.42/32,979.90 = 13,288.04/x
3. Step 3: Cross multiply
   23,898.42x = 32,979.90 × 13,288.04
4. Step 4: Simplify right side
   23,898.42x = 438,238,065.50
5. Step 5: Solve for x
   x = 438,238,065.50/23,898.42
6. Step 6: Final answer
   x = 18,337.53