Finding the Fourth Proportional to 9,101.72, 12,559.68 and 5,122.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,101.72 : 12,559.68 = 5,122.08 : x
2. Step 2: Convert to fraction form
   9,101.72/12,559.68 = 5,122.08/x
3. Step 3: Cross multiply
   9,101.72x = 12,559.68 × 5,122.08
4. Step 4: Simplify right side
   9,101.72x = 64,331,685.73
5. Step 5: Solve for x
   x = 64,331,685.73/9,101.72
6. Step 6: Final answer
   x = 7,068.08