Finding the Fourth Proportional to 9,118.86, 12,583.56 and 5,140.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,118.86 : 12,583.56 = 5,140.22 : x
2. Step 2: Convert to fraction form
   9,118.86/12,583.56 = 5,140.22/x
3. Step 3: Cross multiply
   9,118.86x = 12,583.56 × 5,140.22
4. Step 4: Simplify right side
   9,118.86x = 64,682,266.78
5. Step 5: Solve for x
   x = 64,682,266.78/9,118.86
6. Step 6: Final answer
   x = 7,093.24