Finding the Fourth Proportional to 7,365.15, 10,164.15 and 4,221.94

Step by Step Solution

1. Step 1: Write the proportion equation
   7,365.15 : 10,164.15 = 4,221.94 : x
2. Step 2: Convert to fraction form
   7,365.15/10,164.15 = 4,221.94/x
3. Step 3: Cross multiply
   7,365.15x = 10,164.15 × 4,221.94
4. Step 4: Simplify right side
   7,365.15x = 42,912,431.45
5. Step 5: Solve for x
   x = 42,912,431.45/7,365.15
6. Step 6: Final answer
   x = 5,826.42