Finding the Fourth Proportional to 12,877.52, 17,788.01 and 9,930.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,877.52 : 17,788.01 = 9,930.33 : x
2. Step 2: Convert to fraction form
   12,877.52/17,788.01 = 9,930.33/x
3. Step 3: Cross multiply
   12,877.52x = 17,788.01 × 9,930.33
4. Step 4: Simplify right side
   12,877.52x = 176,640,759.69
5. Step 5: Solve for x
   x = 176,640,759.69/12,877.52
6. Step 6: Final answer
   x = 13,716.99