Finding the Fourth Proportional to 12,571.93, 17,349.27 and 7,856.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,571.93 : 17,349.27 = 7,856.17 : x
2. Step 2: Convert to fraction form
   12,571.93/17,349.27 = 7,856.17/x
3. Step 3: Cross multiply
   12,571.93x = 17,349.27 × 7,856.17
4. Step 4: Simplify right side
   12,571.93x = 136,298,814.50
5. Step 5: Solve for x
   x = 136,298,814.50/12,571.93
6. Step 6: Final answer
   x = 10,841.52