Finding the Fourth Proportional to 9,054, 12,491.16 and 5,691.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,054 : 12,491.16 = 5,691.12 : x
2. Step 2: Convert to fraction form
   9,054/12,491.16 = 5,691.12/x
3. Step 3: Cross multiply
   9,054x = 12,491.16 × 5,691.12
4. Step 4: Simplify right side
   9,054x = 71,088,690.50
5. Step 5: Solve for x
   x = 71,088,690.50/9,054
6. Step 6: Final answer
   x = 7,851.63