Finding the Fourth Proportional to 9,980.53, 14,967.46 and 3,315.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980.53 : 14,967.46 = 3,315.76 : x
2. Step 2: Convert to fraction form
   9,980.53/14,967.46 = 3,315.76/x
3. Step 3: Cross multiply
   9,980.53x = 14,967.46 × 3,315.76
4. Step 4: Simplify right side
   9,980.53x = 49,628,505.17
5. Step 5: Solve for x
   x = 49,628,505.17/9,980.53
6. Step 6: Final answer
   x = 4,972.53