Finding the Fourth Proportional to 8,774.59, 12,111.38 and 5,417.95

Step by Step Solution

1. Step 1: Write the proportion equation
   8,774.59 : 12,111.38 = 5,417.95 : x
2. Step 2: Convert to fraction form
   8,774.59/12,111.38 = 5,417.95/x
3. Step 3: Cross multiply
   8,774.59x = 12,111.38 × 5,417.95
4. Step 4: Simplify right side
   8,774.59x = 65,618,851.27
5. Step 5: Solve for x
   x = 65,618,851.27/8,774.59
6. Step 6: Final answer
   x = 7,478.28