Finding the Fourth Proportional to 8,602.05, 11,870.85 and 5,019.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,602.05 : 11,870.85 = 5,019.47 : x
2. Step 2: Convert to fraction form
   8,602.05/11,870.85 = 5,019.47/x
3. Step 3: Cross multiply
   8,602.05x = 11,870.85 × 5,019.47
4. Step 4: Simplify right side
   8,602.05x = 59,585,375.45
5. Step 5: Solve for x
   x = 59,585,375.45/8,602.05
6. Step 6: Final answer
   x = 6,926.88