Finding the Fourth Proportional to 7,780.35, 10,736.94 and 4,243.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,780.35 : 10,736.94 = 4,243.59 : x
2. Step 2: Convert to fraction form
   7,780.35/10,736.94 = 4,243.59/x
3. Step 3: Cross multiply
   7,780.35x = 10,736.94 × 4,243.59
4. Step 4: Simplify right side
   7,780.35x = 45,563,096.31
5. Step 5: Solve for x
   x = 45,563,096.31/7,780.35
6. Step 6: Final answer
   x = 5,856.18