Finding the Fourth Proportional to 9,383.74, 12,949.60 and 5,134.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,383.74 : 12,949.60 = 5,134.72 : x
2. Step 2: Convert to fraction form
   9,383.74/12,949.60 = 5,134.72/x
3. Step 3: Cross multiply
   9,383.74x = 12,949.60 × 5,134.72
4. Step 4: Simplify right side
   9,383.74x = 66,492,570.11
5. Step 5: Solve for x
   x = 66,492,570.11/9,383.74
6. Step 6: Final answer
   x = 7,085.93