Finding the Fourth Proportional to 12,887.33, 19,338.17 and 6,964.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,887.33 : 19,338.17 = 6,964.10 : x
2. Step 2: Convert to fraction form
   12,887.33/19,338.17 = 6,964.10/x
3. Step 3: Cross multiply
   12,887.33x = 19,338.17 × 6,964.10
4. Step 4: Simplify right side
   12,887.33x = 134,672,818.19
5. Step 5: Solve for x
   x = 134,672,818.19/12,887.33
6. Step 6: Final answer
   x = 10,450.02