Finding the Fourth Proportional to 9,679.41, 13,356.72 and 5,903.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,679.41 : 13,356.72 = 5,903.69 : x
2. Step 2: Convert to fraction form
   9,679.41/13,356.72 = 5,903.69/x
3. Step 3: Cross multiply
   9,679.41x = 13,356.72 × 5,903.69
4. Step 4: Simplify right side
   9,679.41x = 78,853,867.51
5. Step 5: Solve for x
   x = 78,853,867.51/9,679.41
6. Step 6: Final answer
   x = 8,146.56