Finding the Fourth Proportional to 8,966.32, 13,451.30 and 3,123.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,966.32 : 13,451.30 = 3,123.39 : x
2. Step 2: Convert to fraction form
   8,966.32/13,451.30 = 3,123.39/x
3. Step 3: Cross multiply
   8,966.32x = 13,451.30 × 3,123.39
4. Step 4: Simplify right side
   8,966.32x = 42,013,655.91
5. Step 5: Solve for x
   x = 42,013,655.91/8,966.32
6. Step 6: Final answer
   x = 4,685.72