Finding the Fourth Proportional to 32,978.20, 49,466.10 and 13,251.40

Step by Step Solution

1. Step 1: Write the proportion equation
   32,978.20 : 49,466.10 = 13,251.40 : x
2. Step 2: Convert to fraction form
   32,978.20/49,466.10 = 13,251.40/x
3. Step 3: Cross multiply
   32,978.20x = 49,466.10 × 13,251.40
4. Step 4: Simplify right side
   32,978.20x = 655,495,077.54
5. Step 5: Solve for x
   x = 655,495,077.54/32,978.20
6. Step 6: Final answer
   x = 19,876.62