Finding the Fourth Proportional to 16,978.38, 23,430.34 and 9,526.38

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.38 : 23,430.34 = 9,526.38 : x
2. Step 2: Convert to fraction form
   16,978.38/23,430.34 = 9,526.38/x
3. Step 3: Cross multiply
   16,978.38x = 23,430.34 × 9,526.38
4. Step 4: Simplify right side
   16,978.38x = 223,206,322.37
5. Step 5: Solve for x
   x = 223,206,322.37/16,978.38
6. Step 6: Final answer
   x = 13,146.50