Finding the Fourth Proportional to 9,134.93, 12,605.30 and 5,155.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,134.93 : 12,605.30 = 5,155.27 : x
2. Step 2: Convert to fraction form
   9,134.93/12,605.30 = 5,155.27/x
3. Step 3: Cross multiply
   9,134.93x = 12,605.30 × 5,155.27
4. Step 4: Simplify right side
   9,134.93x = 64,983,761.11
5. Step 5: Solve for x
   x = 64,983,761.11/9,134.93
6. Step 6: Final answer
   x = 7,113.77