Finding the Fourth Proportional to 8,300.08, 12,428.15 and 6,845.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,300.08 : 12,428.15 = 6,845.72 : x
2. Step 2: Convert to fraction form
   8,300.08/12,428.15 = 6,845.72/x
3. Step 3: Cross multiply
   8,300.08x = 12,428.15 × 6,845.72
4. Step 4: Simplify right side
   8,300.08x = 85,079,631.86
5. Step 5: Solve for x
   x = 85,079,631.86/8,300.08
6. Step 6: Final answer
   x = 10,250.46