Finding the Fourth Proportional to 19,411.83, 26,780.72 and 10,912.01

Step by Step Solution

1. Step 1: Write the proportion equation
   19,411.83 : 26,780.72 = 10,912.01 : x
2. Step 2: Convert to fraction form
   19,411.83/26,780.72 = 10,912.01/x
3. Step 3: Cross multiply
   19,411.83x = 26,780.72 × 10,912.01
4. Step 4: Simplify right side
   19,411.83x = 292,231,295.98
5. Step 5: Solve for x
   x = 292,231,295.98/19,411.83
6. Step 6: Final answer
   x = 15,054.29