Finding the Fourth Proportional to 13,003.90, 19,467.57 and 8,057.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,003.90 : 19,467.57 = 8,057.62 : x
2. Step 2: Convert to fraction form
   13,003.90/19,467.57 = 8,057.62/x
3. Step 3: Cross multiply
   13,003.90x = 19,467.57 × 8,057.62
4. Step 4: Simplify right side
   13,003.90x = 156,862,281.38
5. Step 5: Solve for x
   x = 156,862,281.38/13,003.90
6. Step 6: Final answer
   x = 12,062.71