Finding the Fourth Proportional to 8,925.59, 12,317.33 and 5,388.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,925.59 : 12,317.33 = 5,388.80 : x
2. Step 2: Convert to fraction form
   8,925.59/12,317.33 = 5,388.80/x
3. Step 3: Cross multiply
   8,925.59x = 12,317.33 × 5,388.80
4. Step 4: Simplify right side
   8,925.59x = 66,375,579.79
5. Step 5: Solve for x
   x = 66,375,579.79/8,925.59
6. Step 6: Final answer
   x = 7,436.55