Finding the Fourth Proportional to 12,914.46, 17,788.01 and 9,924.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,914.46 : 17,788.01 = 9,924.57 : x
2. Step 2: Convert to fraction form
   12,914.46/17,788.01 = 9,924.57/x
3. Step 3: Cross multiply
   12,914.46x = 17,788.01 × 9,924.57
4. Step 4: Simplify right side
   12,914.46x = 176,538,300.78
5. Step 5: Solve for x
   x = 176,538,300.78/12,914.46
6. Step 6: Final answer
   x = 13,669.82