Finding the Fourth Proportional to 7,978.32, 11,013.96 and 5,473.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,978.32 : 11,013.96 = 5,473.68 : x
2. Step 2: Convert to fraction form
   7,978.32/11,013.96 = 5,473.68/x
3. Step 3: Cross multiply
   7,978.32x = 11,013.96 × 5,473.68
4. Step 4: Simplify right side
   7,978.32x = 60,286,892.57
5. Step 5: Solve for x
   x = 60,286,892.57/7,978.32
6. Step 6: Final answer
   x = 7,556.34