Finding the Fourth Proportional to 9,942.72, 14,913.60 and 2,922.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942.72 : 14,913.60 = 2,922.45 : x
2. Step 2: Convert to fraction form
   9,942.72/14,913.60 = 2,922.45/x
3. Step 3: Cross multiply
   9,942.72x = 14,913.60 × 2,922.45
4. Step 4: Simplify right side
   9,942.72x = 43,584,250.32
5. Step 5: Solve for x
   x = 43,584,250.32/9,942.72
6. Step 6: Final answer
   x = 4,383.53