Finding the Fourth Proportional to 9,101.47, 12,559.83 and 5,122.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,101.47 : 12,559.83 = 5,122.63 : x
2. Step 2: Convert to fraction form
   9,101.47/12,559.83 = 5,122.63/x
3. Step 3: Cross multiply
   9,101.47x = 12,559.83 × 5,122.63
4. Step 4: Simplify right side
   9,101.47x = 64,339,361.95
5. Step 5: Solve for x
   x = 64,339,361.95/9,101.47
6. Step 6: Final answer
   x = 7,069.12