Finding the Fourth Proportional to 10,644.87, 14,691.33 and 7,670.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,644.87 : 14,691.33 = 7,670.55 : x
2. Step 2: Convert to fraction form
   10,644.87/14,691.33 = 7,670.55/x
3. Step 3: Cross multiply
   10,644.87x = 14,691.33 × 7,670.55
4. Step 4: Simplify right side
   10,644.87x = 112,690,581.33
5. Step 5: Solve for x
   x = 112,690,581.33/10,644.87
6. Step 6: Final answer
   x = 10,586.37