Finding the Fourth Proportional to 6,645.30, 9,174.78 and 4,130.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,645.30 : 9,174.78 = 4,130.10 : x
2. Step 2: Convert to fraction form
   6,645.30/9,174.78 = 4,130.10/x
3. Step 3: Cross multiply
   6,645.30x = 9,174.78 × 4,130.10
4. Step 4: Simplify right side
   6,645.30x = 37,892,758.88
5. Step 5: Solve for x
   x = 37,892,758.88/6,645.30
6. Step 6: Final answer
   x = 5,702.19