Finding the Fourth Proportional to 9,134.37, 12,605.63 and 5,155.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,134.37 : 12,605.63 = 5,155.25 : x
2. Step 2: Convert to fraction form
   9,134.37/12,605.63 = 5,155.25/x
3. Step 3: Cross multiply
   9,134.37x = 12,605.63 × 5,155.25
4. Step 4: Simplify right side
   9,134.37x = 64,985,085.25
5. Step 5: Solve for x
   x = 64,985,085.25/9,134.37
6. Step 6: Final answer
   x = 7,114.35