Finding the Fourth Proportional to 7,089.34, 9,783.30 and 3,945.46

Step by Step Solution

1. Step 1: Write the proportion equation
   7,089.34 : 9,783.30 = 3,945.46 : x
2. Step 2: Convert to fraction form
   7,089.34/9,783.30 = 3,945.46/x
3. Step 3: Cross multiply
   7,089.34x = 9,783.30 × 3,945.46
4. Step 4: Simplify right side
   7,089.34x = 38,599,618.82
5. Step 5: Solve for x
   x = 38,599,618.82/7,089.34
6. Step 6: Final answer
   x = 5,444.74