Finding the Fourth Proportional to 21,141.46, 31,709.76 and 7,100.92

Step by Step Solution

1. Step 1: Write the proportion equation
   21,141.46 : 31,709.76 = 7,100.92 : x
2. Step 2: Convert to fraction form
   21,141.46/31,709.76 = 7,100.92/x
3. Step 3: Cross multiply
   21,141.46x = 31,709.76 × 7,100.92
4. Step 4: Simplify right side
   21,141.46x = 225,168,468.98
5. Step 5: Solve for x
   x = 225,168,468.98/21,141.46
6. Step 6: Final answer
   x = 10,650.56