Finding the Fourth Proportional to 10,477.52, 14,447.17 and 7,639.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,477.52 : 14,447.17 = 7,639.89 : x
2. Step 2: Convert to fraction form
   10,477.52/14,447.17 = 7,639.89/x
3. Step 3: Cross multiply
   10,477.52x = 14,447.17 × 7,639.89
4. Step 4: Simplify right side
   10,477.52x = 110,374,799.16
5. Step 5: Solve for x
   x = 110,374,799.16/10,477.52
6. Step 6: Final answer
   x = 10,534.44