Finding the Fourth Proportional to 9,877.43, 13,622.72 and 7,043.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,877.43 : 13,622.72 = 7,043.90 : x
2. Step 2: Convert to fraction form
   9,877.43/13,622.72 = 7,043.90/x
3. Step 3: Cross multiply
   9,877.43x = 13,622.72 × 7,043.90
4. Step 4: Simplify right side
   9,877.43x = 95,957,077.41
5. Step 5: Solve for x
   x = 95,957,077.41/9,877.43
6. Step 6: Final answer
   x = 9,714.78