Finding the Fourth Proportional to 23,581.47, 32,538.72 and 13,507.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,581.47 : 32,538.72 = 13,507.50 : x
2. Step 2: Convert to fraction form
   23,581.47/32,538.72 = 13,507.50/x
3. Step 3: Cross multiply
   23,581.47x = 32,538.72 × 13,507.50
4. Step 4: Simplify right side
   23,581.47x = 439,516,760.40
5. Step 5: Solve for x
   x = 439,516,760.40/23,581.47
6. Step 6: Final answer
   x = 18,638.23