Finding the Fourth Proportional to 17,815.51, 24,586.37 and 9,858.07

Step by Step Solution

1. Step 1: Write the proportion equation
   17,815.51 : 24,586.37 = 9,858.07 : x
2. Step 2: Convert to fraction form
   17,815.51/24,586.37 = 9,858.07/x
3. Step 3: Cross multiply
   17,815.51x = 24,586.37 × 9,858.07
4. Step 4: Simplify right side
   17,815.51x = 242,374,156.51
5. Step 5: Solve for x
   x = 242,374,156.51/17,815.51
6. Step 6: Final answer
   x = 13,604.67