Finding the Fourth Proportional to 9,321.84, 12,863.61 and 5,343.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,321.84 : 12,863.61 = 5,343.12 : x
2. Step 2: Convert to fraction form
   9,321.84/12,863.61 = 5,343.12/x
3. Step 3: Cross multiply
   9,321.84x = 12,863.61 × 5,343.12
4. Step 4: Simplify right side
   9,321.84x = 68,731,811.86
5. Step 5: Solve for x
   x = 68,731,811.86/9,321.84
6. Step 6: Final answer
   x = 7,373.20