Finding the Fourth Proportional to 22,406.89, 30,918.08 and 12,973.63

Step by Step Solution

1. Step 1: Write the proportion equation
   22,406.89 : 30,918.08 = 12,973.63 : x
2. Step 2: Convert to fraction form
   22,406.89/30,918.08 = 12,973.63/x
3. Step 3: Cross multiply
   22,406.89x = 30,918.08 × 12,973.63
4. Step 4: Simplify right side
   22,406.89x = 401,119,510.77
5. Step 5: Solve for x
   x = 401,119,510.77/22,406.89
6. Step 6: Final answer
   x = 17,901.62