Finding the Fourth Proportional to 17,726.55, 26,589.52 and 5,246.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,726.55 : 26,589.52 = 5,246.50 : x
2. Step 2: Convert to fraction form
   17,726.55/26,589.52 = 5,246.50/x
3. Step 3: Cross multiply
   17,726.55x = 26,589.52 × 5,246.50
4. Step 4: Simplify right side
   17,726.55x = 139,501,890.45
5. Step 5: Solve for x
   x = 139,501,890.45/17,726.55
6. Step 6: Final answer
   x = 7,869.66