Finding the Fourth Proportional to 13,145.25, 19,717.16 and 5,360.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,145.25 : 19,717.16 = 5,360.61 : x
2. Step 2: Convert to fraction form
   13,145.25/19,717.16 = 5,360.61/x
3. Step 3: Cross multiply
   13,145.25x = 19,717.16 × 5,360.61
4. Step 4: Simplify right side
   13,145.25x = 105,695,978.26
5. Step 5: Solve for x
   x = 105,695,978.26/13,145.25
6. Step 6: Final answer
   x = 8,040.62