Finding the Fourth Proportional to 16,890.06, 23,308.29 and 9,438.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,890.06 : 23,308.29 = 9,438.06 : x
2. Step 2: Convert to fraction form
   16,890.06/23,308.29 = 9,438.06/x
3. Step 3: Cross multiply
   16,890.06x = 23,308.29 × 9,438.06
4. Step 4: Simplify right side
   16,890.06x = 219,985,039.52
5. Step 5: Solve for x
   x = 219,985,039.52/16,890.06
6. Step 6: Final answer
   x = 13,024.53