Finding the Fourth Proportional to 21,531.86, 29,714.56 and 12,101.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,531.86 : 29,714.56 = 12,101.30 : x
2. Step 2: Convert to fraction form
   21,531.86/29,714.56 = 12,101.30/x
3. Step 3: Cross multiply
   21,531.86x = 29,714.56 × 12,101.30
4. Step 4: Simplify right side
   21,531.86x = 359,584,804.93
5. Step 5: Solve for x
   x = 359,584,804.93/21,531.86
6. Step 6: Final answer
   x = 16,700.13