Finding the Fourth Proportional to 10,789.67, 14,887.50 and 6,312.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,789.67 : 14,887.50 = 6,312.57 : x
2. Step 2: Convert to fraction form
   10,789.67/14,887.50 = 6,312.57/x
3. Step 3: Cross multiply
   10,789.67x = 14,887.50 × 6,312.57
4. Step 4: Simplify right side
   10,789.67x = 93,978,306.37
5. Step 5: Solve for x
   x = 93,978,306.37/10,789.67
6. Step 6: Final answer
   x = 8,710.02