Finding the Fourth Proportional to 9,028.86, 12,461.18 and 5,491.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,028.86 : 12,461.18 = 5,491.38 : x
2. Step 2: Convert to fraction form
   9,028.86/12,461.18 = 5,491.38/x
3. Step 3: Cross multiply
   9,028.86x = 12,461.18 × 5,491.38
4. Step 4: Simplify right side
   9,028.86x = 68,429,074.63
5. Step 5: Solve for x
   x = 68,429,074.63/9,028.86
6. Step 6: Final answer
   x = 7,578.93