Finding the Fourth Proportional to 17,431.79, 26,151.78 and 5,745

Step by Step Solution

1. Step 1: Write the proportion equation
   17,431.79 : 26,151.78 = 5,745 : x
2. Step 2: Convert to fraction form
   17,431.79/26,151.78 = 5,745/x
3. Step 3: Cross multiply
   17,431.79x = 26,151.78 × 5,745
4. Step 4: Simplify right side
   17,431.79x = 150,241,976.10
5. Step 5: Solve for x
   x = 150,241,976.10/17,431.79
6. Step 6: Final answer
   x = 8,618.85