Finding the Fourth Proportional to 11,973.84, 16,506.78 and 8,426.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,973.84 : 16,506.78 = 8,426.04 : x
2. Step 2: Convert to fraction form
   11,973.84/16,506.78 = 8,426.04/x
3. Step 3: Cross multiply
   11,973.84x = 16,506.78 × 8,426.04
4. Step 4: Simplify right side
   11,973.84x = 139,086,788.55
5. Step 5: Solve for x
   x = 139,086,788.55/11,973.84
6. Step 6: Final answer
   x = 11,615.89