Finding the Fourth Proportional to 17,364.78, 26,011.94 and 13,860.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,364.78 : 26,011.94 = 13,860.72 : x
2. Step 2: Convert to fraction form
   17,364.78/26,011.94 = 13,860.72/x
3. Step 3: Cross multiply
   17,364.78x = 26,011.94 × 13,860.72
4. Step 4: Simplify right side
   17,364.78x = 360,544,147.69
5. Step 5: Solve for x
   x = 360,544,147.69/17,364.78
6. Step 6: Final answer
   x = 20,762.96