Finding the Fourth Proportional to 13,156.47, 18,152.94 and 7,850.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,156.47 : 18,152.94 = 7,850.25 : x
2. Step 2: Convert to fraction form
   13,156.47/18,152.94 = 7,850.25/x
3. Step 3: Cross multiply
   13,156.47x = 18,152.94 × 7,850.25
4. Step 4: Simplify right side
   13,156.47x = 142,505,117.24
5. Step 5: Solve for x
   x = 142,505,117.24/13,156.47
6. Step 6: Final answer
   x = 10,831.56