Finding the Fourth Proportional to 21,985.71, 30,343.86 and 16,357.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,985.71 : 30,343.86 = 16,357.83 : x
2. Step 2: Convert to fraction form
   21,985.71/30,343.86 = 16,357.83/x
3. Step 3: Cross multiply
   21,985.71x = 30,343.86 × 16,357.83
4. Step 4: Simplify right side
   21,985.71x = 496,359,703.42
5. Step 5: Solve for x
   x = 496,359,703.42/21,985.71
6. Step 6: Final answer
   x = 22,576.47