Finding the Fourth Proportional to 21,501.38, 29,672.43 and 12,070.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,501.38 : 29,672.43 = 12,070.82 : x
2. Step 2: Convert to fraction form
   21,501.38/29,672.43 = 12,070.82/x
3. Step 3: Cross multiply
   21,501.38x = 29,672.43 × 12,070.82
4. Step 4: Simplify right side
   21,501.38x = 358,170,590.41
5. Step 5: Solve for x
   x = 358,170,590.41/21,501.38
6. Step 6: Final answer
   x = 16,658.03