Finding the Fourth Proportional to 23,005.78, 31,746.18 and 12,932.30

Step by Step Solution

1. Step 1: Write the proportion equation
   23,005.78 : 31,746.18 = 12,932.30 : x
2. Step 2: Convert to fraction form
   23,005.78/31,746.18 = 12,932.30/x
3. Step 3: Cross multiply
   23,005.78x = 31,746.18 × 12,932.30
4. Step 4: Simplify right side
   23,005.78x = 410,551,123.61
5. Step 5: Solve for x
   x = 410,551,123.61/23,005.78
6. Step 6: Final answer
   x = 17,845.56