Finding the Fourth Proportional to 11,058.18, 15,279.71 and 8,838.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,058.18 : 15,279.71 = 8,838.37 : x
2. Step 2: Convert to fraction form
   11,058.18/15,279.71 = 8,838.37/x
3. Step 3: Cross multiply
   11,058.18x = 15,279.71 × 8,838.37
4. Step 4: Simplify right side
   11,058.18x = 135,047,730.47
5. Step 5: Solve for x
   x = 135,047,730.47/11,058.18
6. Step 6: Final answer
   x = 12,212.47