Finding the Fourth Proportional to 4,978.32, 7,463.16 and 2,922

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.32 : 7,463.16 = 2,922 : x
2. Step 2: Convert to fraction form
   4,978.32/7,463.16 = 2,922/x
3. Step 3: Cross multiply
   4,978.32x = 7,463.16 × 2,922
4. Step 4: Simplify right side
   4,978.32x = 21,807,353.52
5. Step 5: Solve for x
   x = 21,807,353.52/4,978.32
6. Step 6: Final answer
   x = 4,380.46