Finding the Fourth Proportional to 17,788.98, 26,687.29 and 5,309.99

Step by Step Solution

1. Step 1: Write the proportion equation
   17,788.98 : 26,687.29 = 5,309.99 : x
2. Step 2: Convert to fraction form
   17,788.98/26,687.29 = 5,309.99/x
3. Step 3: Cross multiply
   17,788.98x = 26,687.29 × 5,309.99
4. Step 4: Simplify right side
   17,788.98x = 141,709,243.03
5. Step 5: Solve for x
   x = 141,709,243.03/17,788.98
6. Step 6: Final answer
   x = 7,966.13