Finding the Fourth Proportional to 23,388.24, 32,280.72 and 15,431.52

Step by Step Solution

1. Step 1: Write the proportion equation
   23,388.24 : 32,280.72 = 15,431.52 : x
2. Step 2: Convert to fraction form
   23,388.24/32,280.72 = 15,431.52/x
3. Step 3: Cross multiply
   23,388.24x = 32,280.72 × 15,431.52
4. Step 4: Simplify right side
   23,388.24x = 498,140,576.29
5. Step 5: Solve for x
   x = 498,140,576.29/23,388.24
6. Step 6: Final answer
   x = 21,298.76