Finding the Fourth Proportional to 21,928.92, 30,261.43 and 12,368.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,928.92 : 30,261.43 = 12,368.82 : x
2. Step 2: Convert to fraction form
   21,928.92/30,261.43 = 12,368.82/x
3. Step 3: Cross multiply
   21,928.92x = 30,261.43 × 12,368.82
4. Step 4: Simplify right side
   21,928.92x = 374,298,180.61
5. Step 5: Solve for x
   x = 374,298,180.61/21,928.92
6. Step 6: Final answer
   x = 17,068.70