Finding the Fourth Proportional to 10,101.15, 13,934.79 and 7,118.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,101.15 : 13,934.79 = 7,118.63 : x
2. Step 2: Convert to fraction form
   10,101.15/13,934.79 = 7,118.63/x
3. Step 3: Cross multiply
   10,101.15x = 13,934.79 × 7,118.63
4. Step 4: Simplify right side
   10,101.15x = 99,196,544.46
5. Step 5: Solve for x
   x = 99,196,544.46/10,101.15
6. Step 6: Final answer
   x = 9,820.32