Finding the Fourth Proportional to 16,981.71, 23,437.53 and 9,430.47

Step by Step Solution

1. Step 1: Write the proportion equation
   16,981.71 : 23,437.53 = 9,430.47 : x
2. Step 2: Convert to fraction form
   16,981.71/23,437.53 = 9,430.47/x
3. Step 3: Cross multiply
   16,981.71x = 23,437.53 × 9,430.47
4. Step 4: Simplify right side
   16,981.71x = 221,026,923.54
5. Step 5: Solve for x
   x = 221,026,923.54/16,981.71
6. Step 6: Final answer
   x = 13,015.59