Finding the Fourth Proportional to 8,973.72, 13,446.59 and 5,679.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,973.72 : 13,446.59 = 5,679.86 : x
2. Step 2: Convert to fraction form
   8,973.72/13,446.59 = 5,679.86/x
3. Step 3: Cross multiply
   8,973.72x = 13,446.59 × 5,679.86
4. Step 4: Simplify right side
   8,973.72x = 76,374,653.05
5. Step 5: Solve for x
   x = 76,374,653.05/8,973.72
6. Step 6: Final answer
   x = 8,510.92