Finding the Fourth Proportional to 12,959.48, 19,432.74 and 5,057.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,959.48 : 19,432.74 = 5,057.27 : x
2. Step 2: Convert to fraction form
   12,959.48/19,432.74 = 5,057.27/x
3. Step 3: Cross multiply
   12,959.48x = 19,432.74 × 5,057.27
4. Step 4: Simplify right side
   12,959.48x = 98,276,515.86
5. Step 5: Solve for x
   x = 98,276,515.86/12,959.48
6. Step 6: Final answer
   x = 7,583.37