Finding the Fourth Proportional to 9,965.06, 14,948.28 and 3,390.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.06 : 14,948.28 = 3,390.39 : x
2. Step 2: Convert to fraction form
   9,965.06/14,948.28 = 3,390.39/x
3. Step 3: Cross multiply
   9,965.06x = 14,948.28 × 3,390.39
4. Step 4: Simplify right side
   9,965.06x = 50,680,499.03
5. Step 5: Solve for x
   x = 50,680,499.03/9,965.06
6. Step 6: Final answer
   x = 5,085.82