Finding the Fourth Proportional to 12,803, 17,658.42 and 8,830.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,803 : 17,658.42 = 8,830.76 : x
2. Step 2: Convert to fraction form
   12,803/17,658.42 = 8,830.76/x
3. Step 3: Cross multiply
   12,803x = 17,658.42 × 8,830.76
4. Step 4: Simplify right side
   12,803x = 155,937,269.00
5. Step 5: Solve for x
   x = 155,937,269.00/12,803
6. Step 6: Final answer
   x = 12,179.74