Finding the Fourth Proportional to 21,875.51, 30,187.92 and 12,444.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,875.51 : 30,187.92 = 12,444.05 : x
2. Step 2: Convert to fraction form
   21,875.51/30,187.92 = 12,444.05/x
3. Step 3: Cross multiply
   21,875.51x = 30,187.92 × 12,444.05
4. Step 4: Simplify right side
   21,875.51x = 375,659,834.94
5. Step 5: Solve for x
   x = 375,659,834.94/21,875.51
6. Step 6: Final answer
   x = 17,172.62