Finding the Fourth Proportional to 10,639.01, 14,682.56 and 7,047.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,639.01 : 14,682.56 = 7,047.77 : x
2. Step 2: Convert to fraction form
   10,639.01/14,682.56 = 7,047.77/x
3. Step 3: Cross multiply
   10,639.01x = 14,682.56 × 7,047.77
4. Step 4: Simplify right side
   10,639.01x = 103,479,305.89
5. Step 5: Solve for x
   x = 103,479,305.89/10,639.01
6. Step 6: Final answer
   x = 9,726.40