Finding the Fourth Proportional to 10,385.76, 14,334.40 and 7,240.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.76 : 14,334.40 = 7,240.14 : x
2. Step 2: Convert to fraction form
   10,385.76/14,334.40 = 7,240.14/x
3. Step 3: Cross multiply
   10,385.76x = 14,334.40 × 7,240.14
4. Step 4: Simplify right side
   10,385.76x = 103,783,062.82
5. Step 5: Solve for x
   x = 103,783,062.82/10,385.76
6. Step 6: Final answer
   x = 9,992.82