Finding the Fourth Proportional to 13,124.56, 19,691.76 and 7,863.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,124.56 : 19,691.76 = 7,863.25 : x
2. Step 2: Convert to fraction form
   13,124.56/19,691.76 = 7,863.25/x
3. Step 3: Cross multiply
   13,124.56x = 19,691.76 × 7,863.25
4. Step 4: Simplify right side
   13,124.56x = 154,841,231.82
5. Step 5: Solve for x
   x = 154,841,231.82/13,124.56
6. Step 6: Final answer
   x = 11,797.82