Finding the Fourth Proportional to 17,765, 26,652.72 and 5,285.12

Step by Step Solution

1. Step 1: Write the proportion equation
   17,765 : 26,652.72 = 5,285.12 : x
2. Step 2: Convert to fraction form
   17,765/26,652.72 = 5,285.12/x
3. Step 3: Cross multiply
   17,765x = 26,652.72 × 5,285.12
4. Step 4: Simplify right side
   17,765x = 140,862,823.53
5. Step 5: Solve for x
   x = 140,862,823.53/17,765
6. Step 6: Final answer
   x = 7,929.23