Finding the Fourth Proportional to 8,931.01, 13,388.57 and 3,388.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,931.01 : 13,388.57 = 3,388.25 : x
2. Step 2: Convert to fraction form
   8,931.01/13,388.57 = 3,388.25/x
3. Step 3: Cross multiply
   8,931.01x = 13,388.57 × 3,388.25
4. Step 4: Simplify right side
   8,931.01x = 45,363,763.83
5. Step 5: Solve for x
   x = 45,363,763.83/8,931.01
6. Step 6: Final answer
   x = 5,079.36