Finding the Fourth Proportional to 12,875.30, 17,765.34 and 7,836.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,875.30 : 17,765.34 = 7,836.14 : x
2. Step 2: Convert to fraction form
   12,875.30/17,765.34 = 7,836.14/x
3. Step 3: Cross multiply
   12,875.30x = 17,765.34 × 7,836.14
4. Step 4: Simplify right side
   12,875.30x = 139,211,755.39
5. Step 5: Solve for x
   x = 139,211,755.39/12,875.30
6. Step 6: Final answer
   x = 10,812.31