Finding the Fourth Proportional to 21,531.94, 29,713.89 and 12,100.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,531.94 : 29,713.89 = 12,100.48 : x
2. Step 2: Convert to fraction form
   21,531.94/29,713.89 = 12,100.48/x
3. Step 3: Cross multiply
   21,531.94x = 29,713.89 × 12,100.48
4. Step 4: Simplify right side
   21,531.94x = 359,552,331.67
5. Step 5: Solve for x
   x = 359,552,331.67/21,531.94
6. Step 6: Final answer
   x = 16,698.56