Finding the Fourth Proportional to 16,978.34, 23,432.92 and 9,427.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.34 : 23,432.92 = 9,427.10 : x
2. Step 2: Convert to fraction form
   16,978.34/23,432.92 = 9,427.10/x
3. Step 3: Cross multiply
   16,978.34x = 23,432.92 × 9,427.10
4. Step 4: Simplify right side
   16,978.34x = 220,904,339.40
5. Step 5: Solve for x
   x = 220,904,339.40/16,978.34
6. Step 6: Final answer
   x = 13,010.95