Finding the Fourth Proportional to 4,128.32, 6,188.52 and 2,180.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,128.32 : 6,188.52 = 2,180.72 : x
2. Step 2: Convert to fraction form
   4,128.32/6,188.52 = 2,180.72/x
3. Step 3: Cross multiply
   4,128.32x = 6,188.52 × 2,180.72
4. Step 4: Simplify right side
   4,128.32x = 13,495,429.33
5. Step 5: Solve for x
   x = 13,495,429.33/4,128.32
6. Step 6: Final answer
   x = 3,268.99