Finding the Fourth Proportional to 6,402.72, 9,600.27 and 3,112.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,402.72 : 9,600.27 = 3,112.50 : x
2. Step 2: Convert to fraction form
   6,402.72/9,600.27 = 3,112.50/x
3. Step 3: Cross multiply
   6,402.72x = 9,600.27 × 3,112.50
4. Step 4: Simplify right side
   6,402.72x = 29,880,840.38
5. Step 5: Solve for x
   x = 29,880,840.38/6,402.72
6. Step 6: Final answer
   x = 4,666.90