Finding the Fourth Proportional to 12,890.34, 19,423.32 and 10,601.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,890.34 : 19,423.32 = 10,601.62 : x
2. Step 2: Convert to fraction form
   12,890.34/19,423.32 = 10,601.62/x
3. Step 3: Cross multiply
   12,890.34x = 19,423.32 × 10,601.62
4. Step 4: Simplify right side
   12,890.34x = 205,918,569.46
5. Step 5: Solve for x
   x = 205,918,569.46/12,890.34
6. Step 6: Final answer
   x = 15,974.64