Finding the Fourth Proportional to 17,885, 24,681.30 and 9,928.51

Step by Step Solution

1. Step 1: Write the proportion equation
   17,885 : 24,681.30 = 9,928.51 : x
2. Step 2: Convert to fraction form
   17,885/24,681.30 = 9,928.51/x
3. Step 3: Cross multiply
   17,885x = 24,681.30 × 9,928.51
4. Step 4: Simplify right side
   17,885x = 245,048,533.86
5. Step 5: Solve for x
   x = 245,048,533.86/17,885
6. Step 6: Final answer
   x = 13,701.34