Finding the Fourth Proportional to 17,387.19, 26,081.69 and 13,233.69

Step by Step Solution

1. Step 1: Write the proportion equation
   17,387.19 : 26,081.69 = 13,233.69 : x
2. Step 2: Convert to fraction form
   17,387.19/26,081.69 = 13,233.69/x
3. Step 3: Cross multiply
   17,387.19x = 26,081.69 × 13,233.69
4. Step 4: Simplify right side
   17,387.19x = 345,156,933.97
5. Step 5: Solve for x
   x = 345,156,933.97/17,387.19
6. Step 6: Final answer
   x = 19,851.22