Finding the Fourth Proportional to 9,118.78, 12,583.96 and 5,344.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,118.78 : 12,583.96 = 5,344.18 : x
2. Step 2: Convert to fraction form
   9,118.78/12,583.96 = 5,344.18/x
3. Step 3: Cross multiply
   9,118.78x = 12,583.96 × 5,344.18
4. Step 4: Simplify right side
   9,118.78x = 67,250,947.35
5. Step 5: Solve for x
   x = 67,250,947.35/9,118.78
6. Step 6: Final answer
   x = 7,374.99