Finding the Fourth Proportional to 19,362, 26,719.38 and 10,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,362 : 26,719.38 = 10,978.50 : x
2. Step 2: Convert to fraction form
   19,362/26,719.38 = 10,978.50/x
3. Step 3: Cross multiply
   19,362x = 26,719.38 × 10,978.50
4. Step 4: Simplify right side
   19,362x = 293,338,713.33
5. Step 5: Solve for x
   x = 293,338,713.33/19,362
6. Step 6: Final answer
   x = 15,150.23