Finding the Fourth Proportional to 21,870.84, 30,182.73 and 12,314.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,870.84 : 30,182.73 = 12,314.01 : x
2. Step 2: Convert to fraction form
   21,870.84/30,182.73 = 12,314.01/x
3. Step 3: Cross multiply
   21,870.84x = 30,182.73 × 12,314.01
4. Step 4: Simplify right side
   21,870.84x = 371,670,440.18
5. Step 5: Solve for x
   x = 371,670,440.18/21,870.84
6. Step 6: Final answer
   x = 16,993.88