Finding the Fourth Proportional to 9,622.22, 14,466.27 and 8,900.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,622.22 : 14,466.27 = 8,900.78 : x
2. Step 2: Convert to fraction form
   9,622.22/14,466.27 = 8,900.78/x
3. Step 3: Cross multiply
   9,622.22x = 14,466.27 × 8,900.78
4. Step 4: Simplify right side
   9,622.22x = 128,761,086.69
5. Step 5: Solve for x
   x = 128,761,086.69/9,622.22
6. Step 6: Final answer
   x = 13,381.64