Finding the Fourth Proportional to 21,875.60, 30,188.25 and 12,444.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,875.60 : 30,188.25 = 12,444.18 : x
2. Step 2: Convert to fraction form
   21,875.60/30,188.25 = 12,444.18/x
3. Step 3: Cross multiply
   21,875.60x = 30,188.25 × 12,444.18
4. Step 4: Simplify right side
   21,875.60x = 375,668,016.89
5. Step 5: Solve for x
   x = 375,668,016.89/21,875.60
6. Step 6: Final answer
   x = 17,172.93