Finding the Fourth Proportional to 9,101.05, 12,559.64 and 5,122.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,101.05 : 12,559.64 = 5,122.15 : x
2. Step 2: Convert to fraction form
   9,101.05/12,559.64 = 5,122.15/x
3. Step 3: Cross multiply
   9,101.05x = 12,559.64 × 5,122.15
4. Step 4: Simplify right side
   9,101.05x = 64,332,360.03
5. Step 5: Solve for x
   x = 64,332,360.03/9,101.05
6. Step 6: Final answer
   x = 7,068.67