Finding the Fourth Proportional to 9,354.45, 12,910.56 and 5,818.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.45 : 12,910.56 = 5,818.80 : x
2. Step 2: Convert to fraction form
   9,354.45/12,910.56 = 5,818.80/x
3. Step 3: Cross multiply
   9,354.45x = 12,910.56 × 5,818.80
4. Step 4: Simplify right side
   9,354.45x = 75,123,966.53
5. Step 5: Solve for x
   x = 75,123,966.53/9,354.45
6. Step 6: Final answer
   x = 8,030.83