Finding the Fourth Proportional to 17,723.56, 26,590.53 and 5,243.89

Step by Step Solution

1. Step 1: Write the proportion equation
   17,723.56 : 26,590.53 = 5,243.89 : x
2. Step 2: Convert to fraction form
   17,723.56/26,590.53 = 5,243.89/x
3. Step 3: Cross multiply
   17,723.56x = 26,590.53 × 5,243.89
4. Step 4: Simplify right side
   17,723.56x = 139,437,787.91
5. Step 5: Solve for x
   x = 139,437,787.91/17,723.56
6. Step 6: Final answer
   x = 7,867.37