Finding the Fourth Proportional to 17,676.81, 24,390.50 and 9,915.87

Step by Step Solution

1. Step 1: Write the proportion equation
   17,676.81 : 24,390.50 = 9,915.87 : x
2. Step 2: Convert to fraction form
   17,676.81/24,390.50 = 9,915.87/x
3. Step 3: Cross multiply
   17,676.81x = 24,390.50 × 9,915.87
4. Step 4: Simplify right side
   17,676.81x = 241,852,977.66
5. Step 5: Solve for x
   x = 241,852,977.66/17,676.81
6. Step 6: Final answer
   x = 13,681.94