Finding the Fourth Proportional to 17,948.16, 24,768.18 and 9,991.08

Step by Step Solution

1. Step 1: Write the proportion equation
   17,948.16 : 24,768.18 = 9,991.08 : x
2. Step 2: Convert to fraction form
   17,948.16/24,768.18 = 9,991.08/x
3. Step 3: Cross multiply
   17,948.16x = 24,768.18 × 9,991.08
4. Step 4: Simplify right side
   17,948.16x = 247,460,867.83
5. Step 5: Solve for x
   x = 247,460,867.83/17,948.16
6. Step 6: Final answer
   x = 13,787.53