Finding the Fourth Proportional to 16,385.22, 22,610.88 and 9,312.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,385.22 : 22,610.88 = 9,312.30 : x
2. Step 2: Convert to fraction form
   16,385.22/22,610.88 = 9,312.30/x
3. Step 3: Cross multiply
   16,385.22x = 22,610.88 × 9,312.30
4. Step 4: Simplify right side
   16,385.22x = 210,559,297.82
5. Step 5: Solve for x
   x = 210,559,297.82/16,385.22
6. Step 6: Final answer
   x = 12,850.56