Finding the Fourth Proportional to 11,836.72, 17,763 and 4,911.22

Step by Step Solution

1. Step 1: Write the proportion equation
   11,836.72 : 17,763 = 4,911.22 : x
2. Step 2: Convert to fraction form
   11,836.72/17,763 = 4,911.22/x
3. Step 3: Cross multiply
   11,836.72x = 17,763 × 4,911.22
4. Step 4: Simplify right side
   11,836.72x = 87,238,000.86
5. Step 5: Solve for x
   x = 87,238,000.86/11,836.72
6. Step 6: Final answer
   x = 7,370.12