Finding the Fourth Proportional to 8,819.16, 12,168.54 and 5,091

Step by Step Solution

1. Step 1: Write the proportion equation
   8,819.16 : 12,168.54 = 5,091 : x
2. Step 2: Convert to fraction form
   8,819.16/12,168.54 = 5,091/x
3. Step 3: Cross multiply
   8,819.16x = 12,168.54 × 5,091
4. Step 4: Simplify right side
   8,819.16x = 61,950,037.14
5. Step 5: Solve for x
   x = 61,950,037.14/8,819.16
6. Step 6: Final answer
   x = 7,024.48