Finding the Fourth Proportional to 17,870.63, 24,659.24 and 9,911.77

Step by Step Solution

1. Step 1: Write the proportion equation
   17,870.63 : 24,659.24 = 9,911.77 : x
2. Step 2: Convert to fraction form
   17,870.63/24,659.24 = 9,911.77/x
3. Step 3: Cross multiply
   17,870.63x = 24,659.24 × 9,911.77
4. Step 4: Simplify right side
   17,870.63x = 244,416,604.05
5. Step 5: Solve for x
   x = 244,416,604.05/17,870.63
6. Step 6: Final answer
   x = 13,677.00