Finding the Fourth Proportional to 17,948.72, 24,770.06 and 9,991.46

Step by Step Solution

1. Step 1: Write the proportion equation
   17,948.72 : 24,770.06 = 9,991.46 : x
2. Step 2: Convert to fraction form
   17,948.72/24,770.06 = 9,991.46/x
3. Step 3: Cross multiply
   17,948.72x = 24,770.06 × 9,991.46
4. Step 4: Simplify right side
   17,948.72x = 247,489,150.59
5. Step 5: Solve for x
   x = 247,489,150.59/17,948.72
6. Step 6: Final answer
   x = 13,788.68