Finding the Fourth Proportional to 10,975.50, 15,140.79 and 7,439.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,975.50 : 15,140.79 = 7,439.82 : x
2. Step 2: Convert to fraction form
   10,975.50/15,140.79 = 7,439.82/x
3. Step 3: Cross multiply
   10,975.50x = 15,140.79 × 7,439.82
4. Step 4: Simplify right side
   10,975.50x = 112,644,752.26
5. Step 5: Solve for x
   x = 112,644,752.26/10,975.50
6. Step 6: Final answer
   x = 10,263.29