Finding the Fourth Proportional to 22,406.76, 30,918.78 and 12,973.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,406.76 : 30,918.78 = 12,973.56 : x
2. Step 2: Convert to fraction form
   22,406.76/30,918.78 = 12,973.56/x
3. Step 3: Cross multiply
   22,406.76x = 30,918.78 × 12,973.56
4. Step 4: Simplify right side
   22,406.76x = 401,126,647.46
5. Step 5: Solve for x
   x = 401,126,647.46/22,406.76
6. Step 6: Final answer
   x = 17,902.04