Finding the Fourth Proportional to 5,513.07, 7,607.37 and 3,123.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,513.07 : 7,607.37 = 3,123.30 : x
2. Step 2: Convert to fraction form
   5,513.07/7,607.37 = 3,123.30/x
3. Step 3: Cross multiply
   5,513.07x = 7,607.37 × 3,123.30
4. Step 4: Simplify right side
   5,513.07x = 23,760,098.72
5. Step 5: Solve for x
   x = 23,760,098.72/5,513.07
6. Step 6: Final answer
   x = 4,309.78