Finding the Fourth Proportional to 8,091.42, 12,136.61 and 4,761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,091.42 : 12,136.61 = 4,761.50 : x
2. Step 2: Convert to fraction form
   8,091.42/12,136.61 = 4,761.50/x
3. Step 3: Cross multiply
   8,091.42x = 12,136.61 × 4,761.50
4. Step 4: Simplify right side
   8,091.42x = 57,788,468.52
5. Step 5: Solve for x
   x = 57,788,468.52/8,091.42
6. Step 6: Final answer
   x = 7,141.94