Finding the Fourth Proportional to 9,879.72, 13,634.27 and 5,903.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,879.72 : 13,634.27 = 5,903.13 : x
2. Step 2: Convert to fraction form
   9,879.72/13,634.27 = 5,903.13/x
3. Step 3: Cross multiply
   9,879.72x = 13,634.27 × 5,903.13
4. Step 4: Simplify right side
   9,879.72x = 80,484,868.27
5. Step 5: Solve for x
   x = 80,484,868.27/9,879.72
6. Step 6: Final answer
   x = 8,146.47