Finding the Fourth Proportional to 13,025.25, 19,493.42 and 8,279.00

Step by Step Solution

1. Step 1: Write the proportion equation
   13,025.25 : 19,493.42 = 8,279.00 : x
2. Step 2: Convert to fraction form
   13,025.25/19,493.42 = 8,279.00/x
3. Step 3: Cross multiply
   13,025.25x = 19,493.42 × 8,279.00
4. Step 4: Simplify right side
   13,025.25x = 161,386,031.52
5. Step 5: Solve for x
   x = 161,386,031.52/13,025.25
6. Step 6: Final answer
   x = 12,390.24