Finding the Fourth Proportional to 21,141.59, 31,709.95 and 7,101.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,141.59 : 31,709.95 = 7,101.05 : x
2. Step 2: Convert to fraction form
   21,141.59/31,709.95 = 7,101.05/x
3. Step 3: Cross multiply
   21,141.59x = 31,709.95 × 7,101.05
4. Step 4: Simplify right side
   21,141.59x = 225,173,764.15
5. Step 5: Solve for x
   x = 225,173,764.15/21,141.59
6. Step 6: Final answer
   x = 10,650.75