Finding the Fourth Proportional to 12,959.09, 19,439.04 and 5,061.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,959.09 : 19,439.04 = 5,061.28 : x
2. Step 2: Convert to fraction form
   12,959.09/19,439.04 = 5,061.28/x
3. Step 3: Cross multiply
   12,959.09x = 19,439.04 × 5,061.28
4. Step 4: Simplify right side
   12,959.09x = 98,386,424.37
5. Step 5: Solve for x
   x = 98,386,424.37/12,959.09
6. Step 6: Final answer
   x = 7,592.08