Finding the Fourth Proportional to 7,109.34, 9,810.90 and 3,965.46

Step by Step Solution

1. Step 1: Write the proportion equation
   7,109.34 : 9,810.90 = 3,965.46 : x
2. Step 2: Convert to fraction form
   7,109.34/9,810.90 = 3,965.46/x
3. Step 3: Cross multiply
   7,109.34x = 9,810.90 × 3,965.46
4. Step 4: Simplify right side
   7,109.34x = 38,904,731.51
5. Step 5: Solve for x
   x = 38,904,731.51/7,109.34
6. Step 6: Final answer
   x = 5,472.34