Finding the Fourth Proportional to 23,402.72, 32,271.21 and 15,434.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,402.72 : 32,271.21 = 15,434.78 : x
2. Step 2: Convert to fraction form
   23,402.72/32,271.21 = 15,434.78/x
3. Step 3: Cross multiply
   23,402.72x = 32,271.21 × 15,434.78
4. Step 4: Simplify right side
   23,402.72x = 498,099,026.68
5. Step 5: Solve for x
   x = 498,099,026.68/23,402.72
6. Step 6: Final answer
   x = 21,283.81