Finding the Fourth Proportional to 22,399.34, 30,914.88 and 12,973.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,399.34 : 30,914.88 = 12,973.64 : x
2. Step 2: Convert to fraction form
   22,399.34/30,914.88 = 12,973.64/x
3. Step 3: Cross multiply
   22,399.34x = 30,914.88 × 12,973.64
4. Step 4: Simplify right side
   22,399.34x = 401,078,523.76
5. Step 5: Solve for x
   x = 401,078,523.76/22,399.34
6. Step 6: Final answer
   x = 17,905.82