Finding the Fourth Proportional to 17,774.31, 26,642.52 and 13,378.17

Step by Step Solution

1. Step 1: Write the proportion equation
   17,774.31 : 26,642.52 = 13,378.17 : x
2. Step 2: Convert to fraction form
   17,774.31/26,642.52 = 13,378.17/x
3. Step 3: Cross multiply
   17,774.31x = 26,642.52 × 13,378.17
4. Step 4: Simplify right side
   17,774.31x = 356,428,161.79
5. Step 5: Solve for x
   x = 356,428,161.79/17,774.31
6. Step 6: Final answer
   x = 20,053.00