Finding the Fourth Proportional to 9,980.30, 14,970.89 and 3,317.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980.30 : 14,970.89 = 3,317.02 : x
2. Step 2: Convert to fraction form
   9,980.30/14,970.89 = 3,317.02/x
3. Step 3: Cross multiply
   9,980.30x = 14,970.89 × 3,317.02
4. Step 4: Simplify right side
   9,980.30x = 49,658,741.55
5. Step 5: Solve for x
   x = 49,658,741.55/9,980.30
6. Step 6: Final answer
   x = 4,975.68