Finding the Fourth Proportional to 16,091.50, 22,201.40 and 10,129.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,091.50 : 22,201.40 = 10,129.10 : x
2. Step 2: Convert to fraction form
   16,091.50/22,201.40 = 10,129.10/x
3. Step 3: Cross multiply
   16,091.50x = 22,201.40 × 10,129.10
4. Step 4: Simplify right side
   16,091.50x = 224,880,200.74
5. Step 5: Solve for x
   x = 224,880,200.74/16,091.50
6. Step 6: Final answer
   x = 13,975.09