Finding the Fourth Proportional to 22,389.77, 30,897.02 and 12,317.63

Step by Step Solution

1. Step 1: Write the proportion equation
   22,389.77 : 30,897.02 = 12,317.63 : x
2. Step 2: Convert to fraction form
   22,389.77/30,897.02 = 12,317.63/x
3. Step 3: Cross multiply
   22,389.77x = 30,897.02 × 12,317.63
4. Step 4: Simplify right side
   22,389.77x = 380,577,936.77
5. Step 5: Solve for x
   x = 380,577,936.77/22,389.77
6. Step 6: Final answer
   x = 16,997.85