Finding the Fourth Proportional to 9,978.72, 14,958.36 and 5,050.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.72 : 14,958.36 = 5,050.68 : x
2. Step 2: Convert to fraction form
   9,978.72/14,958.36 = 5,050.68/x
3. Step 3: Cross multiply
   9,978.72x = 14,958.36 × 5,050.68
4. Step 4: Simplify right side
   9,978.72x = 75,549,889.68
5. Step 5: Solve for x
   x = 75,549,889.68/9,978.72
6. Step 6: Final answer
   x = 7,571.10