Finding the Fourth Proportional to 21,826.08, 30,111.48 and 12,393.36

Step by Step Solution

1. Step 1: Write the proportion equation
   21,826.08 : 30,111.48 = 12,393.36 : x
2. Step 2: Convert to fraction form
   21,826.08/30,111.48 = 12,393.36/x
3. Step 3: Cross multiply
   21,826.08x = 30,111.48 × 12,393.36
4. Step 4: Simplify right side
   21,826.08x = 373,182,411.77
5. Step 5: Solve for x
   x = 373,182,411.77/21,826.08
6. Step 6: Final answer
   x = 17,098.00