Finding the Fourth Proportional to 8,056.12, 12,085.28 and 7,570.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,056.12 : 12,085.28 = 7,570.12 : x
2. Step 2: Convert to fraction form
   8,056.12/12,085.28 = 7,570.12/x
3. Step 3: Cross multiply
   8,056.12x = 12,085.28 × 7,570.12
4. Step 4: Simplify right side
   8,056.12x = 91,487,019.83
5. Step 5: Solve for x
   x = 91,487,019.83/8,056.12
6. Step 6: Final answer
   x = 11,356.21