Finding the Fourth Proportional to 21,876.83, 30,192.29 and 13,384.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,876.83 : 30,192.29 = 13,384.61 : x
2. Step 2: Convert to fraction form
   21,876.83/30,192.29 = 13,384.61/x
3. Step 3: Cross multiply
   21,876.83x = 30,192.29 × 13,384.61
4. Step 4: Simplify right side
   21,876.83x = 404,112,060.12
5. Step 5: Solve for x
   x = 404,112,060.12/21,876.83
6. Step 6: Final answer
   x = 18,472.15