Finding the Fourth Proportional to 8,111.71, 12,145.56 and 6,784.93

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.71 : 12,145.56 = 6,784.93 : x
2. Step 2: Convert to fraction form
   8,111.71/12,145.56 = 6,784.93/x
3. Step 3: Cross multiply
   8,111.71x = 12,145.56 × 6,784.93
4. Step 4: Simplify right side
   8,111.71x = 82,406,774.41
5. Step 5: Solve for x
   x = 82,406,774.41/8,111.71
6. Step 6: Final answer
   x = 10,158.99