Finding the Fourth Proportional to 21,776.60, 30,053.94 and 12,826.92

Step by Step Solution

1. Step 1: Write the proportion equation
   21,776.60 : 30,053.94 = 12,826.92 : x
2. Step 2: Convert to fraction form
   21,776.60/30,053.94 = 12,826.92/x
3. Step 3: Cross multiply
   21,776.60x = 30,053.94 × 12,826.92
4. Step 4: Simplify right side
   21,776.60x = 385,499,484.06
5. Step 5: Solve for x
   x = 385,499,484.06/21,776.60
6. Step 6: Final answer
   x = 17,702.46