Finding the Fourth Proportional to 8,753.42, 13,128.50 and 2,830.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,753.42 : 13,128.50 = 2,830.43 : x
2. Step 2: Convert to fraction form
   8,753.42/13,128.50 = 2,830.43/x
3. Step 3: Cross multiply
   8,753.42x = 13,128.50 × 2,830.43
4. Step 4: Simplify right side
   8,753.42x = 37,159,220.46
5. Step 5: Solve for x
   x = 37,159,220.46/8,753.42
6. Step 6: Final answer
   x = 4,245.11