Finding the Fourth Proportional to 9,155.32, 12,632.84 and 5,377.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155.32 : 12,632.84 = 5,377.68 : x
2. Step 2: Convert to fraction form
   9,155.32/12,632.84 = 5,377.68/x
3. Step 3: Cross multiply
   9,155.32x = 12,632.84 × 5,377.68
4. Step 4: Simplify right side
   9,155.32x = 67,935,371.01
5. Step 5: Solve for x
   x = 67,935,371.01/9,155.32
6. Step 6: Final answer
   x = 7,420.32