Finding the Fourth Proportional to 9,155.36, 12,634.28 and 5,377.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155.36 : 12,634.28 = 5,377.88 : x
2. Step 2: Convert to fraction form
   9,155.36/12,634.28 = 5,377.88/x
3. Step 3: Cross multiply
   9,155.36x = 12,634.28 × 5,377.88
4. Step 4: Simplify right side
   9,155.36x = 67,945,551.67
5. Step 5: Solve for x
   x = 67,945,551.67/9,155.36
6. Step 6: Final answer
   x = 7,421.40