Finding the Fourth Proportional to 19,111.41, 26,382.65 and 12,748.59

Step by Step Solution

1. Step 1: Write the proportion equation
   19,111.41 : 26,382.65 = 12,748.59 : x
2. Step 2: Convert to fraction form
   19,111.41/26,382.65 = 12,748.59/x
3. Step 3: Cross multiply
   19,111.41x = 26,382.65 × 12,748.59
4. Step 4: Simplify right side
   19,111.41x = 336,341,524.22
5. Step 5: Solve for x
   x = 336,341,524.22/19,111.41
6. Step 6: Final answer
   x = 17,598.99