Finding the Fourth Proportional to 10,139.16, 13,990.14 and 5,662.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,139.16 : 13,990.14 = 5,662.92 : x
2. Step 2: Convert to fraction form
   10,139.16/13,990.14 = 5,662.92/x
3. Step 3: Cross multiply
   10,139.16x = 13,990.14 × 5,662.92
4. Step 4: Simplify right side
   10,139.16x = 79,225,043.61
5. Step 5: Solve for x
   x = 79,225,043.61/10,139.16
6. Step 6: Final answer
   x = 7,813.77