Finding the Fourth Proportional to 9,118.58, 12,583.50 and 5,140.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,118.58 : 12,583.50 = 5,140.07 : x
2. Step 2: Convert to fraction form
   9,118.58/12,583.50 = 5,140.07/x
3. Step 3: Cross multiply
   9,118.58x = 12,583.50 × 5,140.07
4. Step 4: Simplify right side
   9,118.58x = 64,680,070.85
5. Step 5: Solve for x
   x = 64,680,070.85/9,118.58
6. Step 6: Final answer
   x = 7,093.22