Finding the Fourth Proportional to 17,827.50, 26,742.69 and 5,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,827.50 : 26,742.69 = 5,515.50 : x
2. Step 2: Convert to fraction form
   17,827.50/26,742.69 = 5,515.50/x
3. Step 3: Cross multiply
   17,827.50x = 26,742.69 × 5,515.50
4. Step 4: Simplify right side
   17,827.50x = 147,499,306.70
5. Step 5: Solve for x
   x = 147,499,306.70/17,827.50
6. Step 6: Final answer
   x = 8,273.70