Finding the Fourth Proportional to 12,147.84, 16,740.54 and 8,784.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,147.84 : 16,740.54 = 8,784.72 : x
2. Step 2: Convert to fraction form
   12,147.84/16,740.54 = 8,784.72/x
3. Step 3: Cross multiply
   12,147.84x = 16,740.54 × 8,784.72
4. Step 4: Simplify right side
   12,147.84x = 147,060,956.55
5. Step 5: Solve for x
   x = 147,060,956.55/12,147.84
6. Step 6: Final answer
   x = 12,105.93