Finding the Fourth Proportional to 13,129.46, 19,686.63 and 5,730.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,129.46 : 19,686.63 = 5,730.38 : x
2. Step 2: Convert to fraction form
   13,129.46/19,686.63 = 5,730.38/x
3. Step 3: Cross multiply
   13,129.46x = 19,686.63 × 5,730.38
4. Step 4: Simplify right side
   13,129.46x = 112,811,870.82
5. Step 5: Solve for x
   x = 112,811,870.82/13,129.46
6. Step 6: Final answer
   x = 8,592.27