Finding the Fourth Proportional to 17,928.78, 26,894.58 and 5,449.89

Step by Step Solution

1. Step 1: Write the proportion equation
   17,928.78 : 26,894.58 = 5,449.89 : x
2. Step 2: Convert to fraction form
   17,928.78/26,894.58 = 5,449.89/x
3. Step 3: Cross multiply
   17,928.78x = 26,894.58 × 5,449.89
4. Step 4: Simplify right side
   17,928.78x = 146,572,502.60
5. Step 5: Solve for x
   x = 146,572,502.60/17,928.78
6. Step 6: Final answer
   x = 8,175.26