Finding the Fourth Proportional to 4,978.32, 7,474.04 and 2,900.24

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.32 : 7,474.04 = 2,900.24 : x
2. Step 2: Convert to fraction form
   4,978.32/7,474.04 = 2,900.24/x
3. Step 3: Cross multiply
   4,978.32x = 7,474.04 × 2,900.24
4. Step 4: Simplify right side
   4,978.32x = 21,676,509.77
5. Step 5: Solve for x
   x = 21,676,509.77/4,978.32
6. Step 6: Final answer
   x = 4,354.18