Finding the Fourth Proportional to 8,253.30, 12,363.15 and 5,123.70

Step by Step Solution

1. Step 1: Write the proportion equation
   8,253.30 : 12,363.15 = 5,123.70 : x
2. Step 2: Convert to fraction form
   8,253.30/12,363.15 = 5,123.70/x
3. Step 3: Cross multiply
   8,253.30x = 12,363.15 × 5,123.70
4. Step 4: Simplify right side
   8,253.30x = 63,345,071.66
5. Step 5: Solve for x
   x = 63,345,071.66/8,253.30
6. Step 6: Final answer
   x = 7,675.12