Finding the Fourth Proportional to 28,793.57, 43,196.16 and 12,153.62

Step by Step Solution

1. Step 1: Write the proportion equation
   28,793.57 : 43,196.16 = 12,153.62 : x
2. Step 2: Convert to fraction form
   28,793.57/43,196.16 = 12,153.62/x
3. Step 3: Cross multiply
   28,793.57x = 43,196.16 × 12,153.62
4. Step 4: Simplify right side
   28,793.57x = 524,989,714.10
5. Step 5: Solve for x
   x = 524,989,714.10/28,793.57
6. Step 6: Final answer
   x = 18,232.88