Finding the Fourth Proportional to 12,153.84, 16,748.82 and 8,790.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,153.84 : 16,748.82 = 8,790.72 : x
2. Step 2: Convert to fraction form
   12,153.84/16,748.82 = 8,790.72/x
3. Step 3: Cross multiply
   12,153.84x = 16,748.82 × 8,790.72
4. Step 4: Simplify right side
   12,153.84x = 147,234,186.95
5. Step 5: Solve for x
   x = 147,234,186.95/12,153.84
6. Step 6: Final answer
   x = 12,114.21