Finding the Fourth Proportional to 12,899.84, 17,777.67 and 10,062.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,899.84 : 17,777.67 = 10,062.71 : x
2. Step 2: Convert to fraction form
   12,899.84/17,777.67 = 10,062.71/x
3. Step 3: Cross multiply
   12,899.84x = 17,777.67 × 10,062.71
4. Step 4: Simplify right side
   12,899.84x = 178,891,477.73
5. Step 5: Solve for x
   x = 178,891,477.73/12,899.84
6. Step 6: Final answer
   x = 13,867.73