Finding the Fourth Proportional to 9,902.76, 13,665.96 and 5,426.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,902.76 : 13,665.96 = 5,426.48 : x
2. Step 2: Convert to fraction form
   9,902.76/13,665.96 = 5,426.48/x
3. Step 3: Cross multiply
   9,902.76x = 13,665.96 × 5,426.48
4. Step 4: Simplify right side
   9,902.76x = 74,157,990.29
5. Step 5: Solve for x
   x = 74,157,990.29/9,902.76
6. Step 6: Final answer
   x = 7,488.62