Finding the Fourth Proportional to 23,541.76, 32,487.78 and 12,931.30

Step by Step Solution

1. Step 1: Write the proportion equation
   23,541.76 : 32,487.78 = 12,931.30 : x
2. Step 2: Convert to fraction form
   23,541.76/32,487.78 = 12,931.30/x
3. Step 3: Cross multiply
   23,541.76x = 32,487.78 × 12,931.30
4. Step 4: Simplify right side
   23,541.76x = 420,109,229.51
5. Step 5: Solve for x
   x = 420,109,229.51/23,541.76
6. Step 6: Final answer
   x = 17,845.28