Finding the Fourth Proportional to 17,642.37, 24,346.46 and 9,985.51

Step by Step Solution

1. Step 1: Write the proportion equation
   17,642.37 : 24,346.46 = 9,985.51 : x
2. Step 2: Convert to fraction form
   17,642.37/24,346.46 = 9,985.51/x
3. Step 3: Cross multiply
   17,642.37x = 24,346.46 × 9,985.51
4. Step 4: Simplify right side
   17,642.37x = 243,111,819.79
5. Step 5: Solve for x
   x = 243,111,819.79/17,642.37
6. Step 6: Final answer
   x = 13,780.00