Finding the Fourth Proportional to 9,978.75, 14,967.72 and 2,958.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.75 : 14,967.72 = 2,958.48 : x
2. Step 2: Convert to fraction form
   9,978.75/14,967.72 = 2,958.48/x
3. Step 3: Cross multiply
   9,978.75x = 14,967.72 × 2,958.48
4. Step 4: Simplify right side
   9,978.75x = 44,281,700.27
5. Step 5: Solve for x
   x = 44,281,700.27/9,978.75
6. Step 6: Final answer
   x = 4,437.60