Finding the Fourth Proportional to 17,945.81, 24,764.69 and 9,987.86

Step by Step Solution

1. Step 1: Write the proportion equation
   17,945.81 : 24,764.69 = 9,987.86 : x
2. Step 2: Convert to fraction form
   17,945.81/24,764.69 = 9,987.86/x
3. Step 3: Cross multiply
   17,945.81x = 24,764.69 × 9,987.86
4. Step 4: Simplify right side
   17,945.81x = 247,346,343.54
5. Step 5: Solve for x
   x = 247,346,343.54/17,945.81
6. Step 6: Final answer
   x = 13,782.96