Finding the Fourth Proportional to 6,140.81, 8,475.69 and 3,902.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,140.81 : 8,475.69 = 3,902.25 : x
2. Step 2: Convert to fraction form
   6,140.81/8,475.69 = 3,902.25/x
3. Step 3: Cross multiply
   6,140.81x = 8,475.69 × 3,902.25
4. Step 4: Simplify right side
   6,140.81x = 33,074,261.93
5. Step 5: Solve for x
   x = 33,074,261.93/6,140.81
6. Step 6: Final answer
   x = 5,385.97