Finding the Fourth Proportional to 7,365.52, 10,164.86 and 4,221.91

Step by Step Solution

1. Step 1: Write the proportion equation
   7,365.52 : 10,164.86 = 4,221.91 : x
2. Step 2: Convert to fraction form
   7,365.52/10,164.86 = 4,221.91/x
3. Step 3: Cross multiply
   7,365.52x = 10,164.86 × 4,221.91
4. Step 4: Simplify right side
   7,365.52x = 42,915,124.08
5. Step 5: Solve for x
   x = 42,915,124.08/7,365.52
6. Step 6: Final answer
   x = 5,826.49