Finding the Fourth Proportional to 22,185.31, 30,615.58 and 12,113.75

Step by Step Solution

1. Step 1: Write the proportion equation
   22,185.31 : 30,615.58 = 12,113.75 : x
2. Step 2: Convert to fraction form
   22,185.31/30,615.58 = 12,113.75/x
3. Step 3: Cross multiply
   22,185.31x = 30,615.58 × 12,113.75
4. Step 4: Simplify right side
   22,185.31x = 370,869,268.58
5. Step 5: Solve for x
   x = 370,869,268.58/22,185.31
6. Step 6: Final answer
   x = 16,716.88