Finding the Fourth Proportional to 9,980.52, 14,958.83 and 4,427.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980.52 : 14,958.83 = 4,427.60 : x
2. Step 2: Convert to fraction form
   9,980.52/14,958.83 = 4,427.60/x
3. Step 3: Cross multiply
   9,980.52x = 14,958.83 × 4,427.60
4. Step 4: Simplify right side
   9,980.52x = 66,231,618.78
5. Step 5: Solve for x
   x = 66,231,618.78/9,980.52
6. Step 6: Final answer
   x = 6,636.09