Finding the Fourth Proportional to 21,531.51, 29,713.37 and 12,100.07

Step by Step Solution

1. Step 1: Write the proportion equation
   21,531.51 : 29,713.37 = 12,100.07 : x
2. Step 2: Convert to fraction form
   21,531.51/29,713.37 = 12,100.07/x
3. Step 3: Cross multiply
   21,531.51x = 29,713.37 × 12,100.07
4. Step 4: Simplify right side
   21,531.51x = 359,533,870.72
5. Step 5: Solve for x
   x = 359,533,870.72/21,531.51
6. Step 6: Final answer
   x = 16,698.03