Finding the Fourth Proportional to 9,865.38, 14,790.78 and 3,622.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,865.38 : 14,790.78 = 3,622.10 : x
2. Step 2: Convert to fraction form
   9,865.38/14,790.78 = 3,622.10/x
3. Step 3: Cross multiply
   9,865.38x = 14,790.78 × 3,622.10
4. Step 4: Simplify right side
   9,865.38x = 53,573,684.24
5. Step 5: Solve for x
   x = 53,573,684.24/9,865.38
6. Step 6: Final answer
   x = 5,430.47