Finding the Fourth Proportional to 9,123.78, 12,590.83 and 4,932.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.78 : 12,590.83 = 4,932.03 : x
2. Step 2: Convert to fraction form
   9,123.78/12,590.83 = 4,932.03/x
3. Step 3: Cross multiply
   9,123.78x = 12,590.83 × 4,932.03
4. Step 4: Simplify right side
   9,123.78x = 62,098,351.28
5. Step 5: Solve for x
   x = 62,098,351.28/9,123.78
6. Step 6: Final answer
   x = 6,806.21