Finding the Fourth Proportional to 14,501.46, 21,753.90 and 5,139.54

Step by Step Solution

1. Step 1: Write the proportion equation
   14,501.46 : 21,753.90 = 5,139.54 : x
2. Step 2: Convert to fraction form
   14,501.46/21,753.90 = 5,139.54/x
3. Step 3: Cross multiply
   14,501.46x = 21,753.90 × 5,139.54
4. Step 4: Simplify right side
   14,501.46x = 111,805,039.21
5. Step 5: Solve for x
   x = 111,805,039.21/14,501.46
6. Step 6: Final answer
   x = 7,709.92