Finding the Fourth Proportional to 13,148.72, 19,725.48 and 4,382.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,148.72 : 19,725.48 = 4,382.80 : x
2. Step 2: Convert to fraction form
   13,148.72/19,725.48 = 4,382.80/x
3. Step 3: Cross multiply
   13,148.72x = 19,725.48 × 4,382.80
4. Step 4: Simplify right side
   13,148.72x = 86,452,833.74
5. Step 5: Solve for x
   x = 86,452,833.74/13,148.72
6. Step 6: Final answer
   x = 6,575.00