Finding the Fourth Proportional to 9,211.30, 12,711.58 and 5,019.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,211.30 : 12,711.58 = 5,019.56 : x
2. Step 2: Convert to fraction form
   9,211.30/12,711.58 = 5,019.56/x
3. Step 3: Cross multiply
   9,211.30x = 12,711.58 × 5,019.56
4. Step 4: Simplify right side
   9,211.30x = 63,806,538.50
5. Step 5: Solve for x
   x = 63,806,538.50/9,211.30
6. Step 6: Final answer
   x = 6,926.99