Finding the Fourth Proportional to 9,845.56, 14,768.34 and 2,920

Step by Step Solution

1. Step 1: Write the proportion equation
   9,845.56 : 14,768.34 = 2,920 : x
2. Step 2: Convert to fraction form
   9,845.56/14,768.34 = 2,920/x
3. Step 3: Cross multiply
   9,845.56x = 14,768.34 × 2,920
4. Step 4: Simplify right side
   9,845.56x = 43,123,552.80
5. Step 5: Solve for x
   x = 43,123,552.80/9,845.56
6. Step 6: Final answer
   x = 4,380