Finding the Fourth Proportional to 19,300.52, 26,639.06 and 10,919.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,300.52 : 26,639.06 = 10,919.72 : x
2. Step 2: Convert to fraction form
   19,300.52/26,639.06 = 10,919.72/x
3. Step 3: Cross multiply
   19,300.52x = 26,639.06 × 10,919.72
4. Step 4: Simplify right side
   19,300.52x = 290,891,076.26
5. Step 5: Solve for x
   x = 290,891,076.26/19,300.52
6. Step 6: Final answer
   x = 15,071.67