Finding the Fourth Proportional to 5,676.32, 7,838.30 and 5,490.43

Step by Step Solution

1. Step 1: Write the proportion equation
   5,676.32 : 7,838.30 = 5,490.43 : x
2. Step 2: Convert to fraction form
   5,676.32/7,838.30 = 5,490.43/x
3. Step 3: Cross multiply
   5,676.32x = 7,838.30 × 5,490.43
4. Step 4: Simplify right side
   5,676.32x = 43,035,631.60
5. Step 5: Solve for x
   x = 43,035,631.60/5,676.32
6. Step 6: Final answer
   x = 7,581.60