Finding the Fourth Proportional to 9,271.78, 13,909.46 and 3,030.11

Step by Step Solution

1. Step 1: Write the proportion equation
   9,271.78 : 13,909.46 = 3,030.11 : x
2. Step 2: Convert to fraction form
   9,271.78/13,909.46 = 3,030.11/x
3. Step 3: Cross multiply
   9,271.78x = 13,909.46 × 3,030.11
4. Step 4: Simplify right side
   9,271.78x = 42,147,178.69
5. Step 5: Solve for x
   x = 42,147,178.69/9,271.78
6. Step 6: Final answer
   x = 4,545.75