Finding the Fourth Proportional to 9,158.48, 12,635.61 and 5,574.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,158.48 : 12,635.61 = 5,574.68 : x
2. Step 2: Convert to fraction form
   9,158.48/12,635.61 = 5,574.68/x
3. Step 3: Cross multiply
   9,158.48x = 12,635.61 × 5,574.68
4. Step 4: Simplify right side
   9,158.48x = 70,439,482.35
5. Step 5: Solve for x
   x = 70,439,482.35/9,158.48
6. Step 6: Final answer
   x = 7,691.18