Finding the Fourth Proportional to 10,123.30, 15,171.71 and 5,437.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,123.30 : 15,171.71 = 5,437.83 : x
2. Step 2: Convert to fraction form
   10,123.30/15,171.71 = 5,437.83/x
3. Step 3: Cross multiply
   10,123.30x = 15,171.71 × 5,437.83
4. Step 4: Simplify right side
   10,123.30x = 82,501,209.49
5. Step 5: Solve for x
   x = 82,501,209.49/10,123.30
6. Step 6: Final answer
   x = 8,149.63