Finding the Fourth Proportional to 9,965.40, 14,921.37 and 5,570.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.40 : 14,921.37 = 5,570.34 : x
2. Step 2: Convert to fraction form
   9,965.40/14,921.37 = 5,570.34/x
3. Step 3: Cross multiply
   9,965.40x = 14,921.37 × 5,570.34
4. Step 4: Simplify right side
   9,965.40x = 83,117,104.17
5. Step 5: Solve for x
   x = 83,117,104.17/9,965.40
6. Step 6: Final answer
   x = 8,340.57