Finding the Fourth Proportional to 11,784.96, 17,638.98 and 8,664.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,784.96 : 17,638.98 = 8,664.18 : x
2. Step 2: Convert to fraction form
   11,784.96/17,638.98 = 8,664.18/x
3. Step 3: Cross multiply
   11,784.96x = 17,638.98 × 8,664.18
4. Step 4: Simplify right side
   11,784.96x = 152,827,297.74
5. Step 5: Solve for x
   x = 152,827,297.74/11,784.96
6. Step 6: Final answer
   x = 12,967.99