Finding the Fourth Proportional to 21,532.32, 29,717.39 and 12,100.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,532.32 : 29,717.39 = 12,100.88 : x
2. Step 2: Convert to fraction form
   21,532.32/29,717.39 = 12,100.88/x
3. Step 3: Cross multiply
   21,532.32x = 29,717.39 × 12,100.88
4. Step 4: Simplify right side
   21,532.32x = 359,606,361.21
5. Step 5: Solve for x
   x = 359,606,361.21/21,532.32
6. Step 6: Final answer
   x = 16,700.77