Finding the Fourth Proportional to 9,939.60, 13,715.47 and 5,462.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,939.60 : 13,715.47 = 5,462.62 : x
2. Step 2: Convert to fraction form
   9,939.60/13,715.47 = 5,462.62/x
3. Step 3: Cross multiply
   9,939.60x = 13,715.47 × 5,462.62
4. Step 4: Simplify right side
   9,939.60x = 74,922,400.73
5. Step 5: Solve for x
   x = 74,922,400.73/9,939.60
6. Step 6: Final answer
   x = 7,537.77