Finding the Fourth Proportional to 9,117.35, 12,582.83 and 5,340.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,117.35 : 12,582.83 = 5,340.28 : x
2. Step 2: Convert to fraction form
   9,117.35/12,582.83 = 5,340.28/x
3. Step 3: Cross multiply
   9,117.35x = 12,582.83 × 5,340.28
4. Step 4: Simplify right side
   9,117.35x = 67,195,835.39
5. Step 5: Solve for x
   x = 67,195,835.39/9,117.35
6. Step 6: Final answer
   x = 7,370.11