Finding the Fourth Proportional to 8,100.91, 12,151.00 and 4,640.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,100.91 : 12,151.00 = 4,640.59 : x
2. Step 2: Convert to fraction form
   8,100.91/12,151.00 = 4,640.59/x
3. Step 3: Cross multiply
   8,100.91x = 12,151.00 × 4,640.59
4. Step 4: Simplify right side
   8,100.91x = 56,387,725.13
5. Step 5: Solve for x
   x = 56,387,725.13/8,100.91
6. Step 6: Final answer
   x = 6,960.67