Finding the Fourth Proportional to 9,445.68, 14,162.12 and 5,288.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,445.68 : 14,162.12 = 5,288.55 : x
2. Step 2: Convert to fraction form
   9,445.68/14,162.12 = 5,288.55/x
3. Step 3: Cross multiply
   9,445.68x = 14,162.12 × 5,288.55
4. Step 4: Simplify right side
   9,445.68x = 74,897,053.28
5. Step 5: Solve for x
   x = 74,897,053.28/9,445.68
6. Step 6: Final answer
   x = 7,929.24