Finding the Fourth Proportional to 16,700.58, 23,047.06 and 9,146.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,700.58 : 23,047.06 = 9,146.78 : x
2. Step 2: Convert to fraction form
   16,700.58/23,047.06 = 9,146.78/x
3. Step 3: Cross multiply
   16,700.58x = 23,047.06 × 9,146.78
4. Step 4: Simplify right side
   16,700.58x = 210,806,387.47
5. Step 5: Solve for x
   x = 210,806,387.47/16,700.58
6. Step 6: Final answer
   x = 12,622.70