Finding the Fourth Proportional to 12,955.78, 17,879.88 and 7,291.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,955.78 : 17,879.88 = 7,291.07 : x
2. Step 2: Convert to fraction form
   12,955.78/17,879.88 = 7,291.07/x
3. Step 3: Cross multiply
   12,955.78x = 17,879.88 × 7,291.07
4. Step 4: Simplify right side
   12,955.78x = 130,363,385.25
5. Step 5: Solve for x
   x = 130,363,385.25/12,955.78
6. Step 6: Final answer
   x = 10,062.18