Finding the Fourth Proportional to 7,158.74, 10,657.94 and 7,124.11

Step by Step Solution

1. Step 1: Write the proportion equation
   7,158.74 : 10,657.94 = 7,124.11 : x
2. Step 2: Convert to fraction form
   7,158.74/10,657.94 = 7,124.11/x
3. Step 3: Cross multiply
   7,158.74x = 10,657.94 × 7,124.11
4. Step 4: Simplify right side
   7,158.74x = 75,928,399.70
5. Step 5: Solve for x
   x = 75,928,399.70/7,158.74
6. Step 6: Final answer
   x = 10,606.39