Finding the Fourth Proportional to 17,878.93, 24,673.01 and 9,921.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,878.93 : 24,673.01 = 9,921.15 : x
2. Step 2: Convert to fraction form
   17,878.93/24,673.01 = 9,921.15/x
3. Step 3: Cross multiply
   17,878.93x = 24,673.01 × 9,921.15
4. Step 4: Simplify right side
   17,878.93x = 244,784,583.56
5. Step 5: Solve for x
   x = 244,784,583.56/17,878.93
6. Step 6: Final answer
   x = 13,691.23