Finding the Fourth Proportional to 9,908.16, 14,774.90 and 9,819.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,908.16 : 14,774.90 = 9,819.33 : x
2. Step 2: Convert to fraction form
   9,908.16/14,774.90 = 9,819.33/x
3. Step 3: Cross multiply
   9,908.16x = 14,774.90 × 9,819.33
4. Step 4: Simplify right side
   9,908.16x = 145,079,618.82
5. Step 5: Solve for x
   x = 145,079,618.82/9,908.16
6. Step 6: Final answer
   x = 14,642.44