Finding the Fourth Proportional to 19,109.78, 26,371.61 and 10,612.52

Step by Step Solution

1. Step 1: Write the proportion equation
   19,109.78 : 26,371.61 = 10,612.52 : x
2. Step 2: Convert to fraction form
   19,109.78/26,371.61 = 10,612.52/x
3. Step 3: Cross multiply
   19,109.78x = 26,371.61 × 10,612.52
4. Step 4: Simplify right side
   19,109.78x = 279,869,053.64
5. Step 5: Solve for x
   x = 279,869,053.64/19,109.78
6. Step 6: Final answer
   x = 14,645.33