Finding the Fourth Proportional to 8,085.58, 12,123.12 and 3,155.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,085.58 : 12,123.12 = 3,155.71 : x
2. Step 2: Convert to fraction form
   8,085.58/12,123.12 = 3,155.71/x
3. Step 3: Cross multiply
   8,085.58x = 12,123.12 × 3,155.71
4. Step 4: Simplify right side
   8,085.58x = 38,257,051.02
5. Step 5: Solve for x
   x = 38,257,051.02/8,085.58
6. Step 6: Final answer
   x = 4,731.52