Finding the Fourth Proportional to 13,057.32, 19,583.82 and 4,292.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,057.32 : 19,583.82 = 4,292.31 : x
2. Step 2: Convert to fraction form
   13,057.32/19,583.82 = 4,292.31/x
3. Step 3: Cross multiply
   13,057.32x = 19,583.82 × 4,292.31
4. Step 4: Simplify right side
   13,057.32x = 84,059,826.42
5. Step 5: Solve for x
   x = 84,059,826.42/13,057.32
6. Step 6: Final answer
   x = 6,437.75