Finding the Fourth Proportional to 9,134.24, 12,605.83 and 5,153.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,134.24 : 12,605.83 = 5,153.90 : x
2. Step 2: Convert to fraction form
   9,134.24/12,605.83 = 5,153.90/x
3. Step 3: Cross multiply
   9,134.24x = 12,605.83 × 5,153.90
4. Step 4: Simplify right side
   9,134.24x = 64,969,111.32
5. Step 5: Solve for x
   x = 64,969,111.32/9,134.24
6. Step 6: Final answer
   x = 7,112.70