Finding the Fourth Proportional to 13,137.02, 18,131.43 and 7,832.17

Step by Step Solution

1. Step 1: Write the proportion equation
   13,137.02 : 18,131.43 = 7,832.17 : x
2. Step 2: Convert to fraction form
   13,137.02/18,131.43 = 7,832.17/x
3. Step 3: Cross multiply
   13,137.02x = 18,131.43 × 7,832.17
4. Step 4: Simplify right side
   13,137.02x = 142,008,442.10
5. Step 5: Solve for x
   x = 142,008,442.10/13,137.02
6. Step 6: Final answer
   x = 10,809.79