Finding the Fourth Proportional to 21,105.05, 31,646.75 and 7,060.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,105.05 : 31,646.75 = 7,060.05 : x
2. Step 2: Convert to fraction form
   21,105.05/31,646.75 = 7,060.05/x
3. Step 3: Cross multiply
   21,105.05x = 31,646.75 × 7,060.05
4. Step 4: Simplify right side
   21,105.05x = 223,427,602.04
5. Step 5: Solve for x
   x = 223,427,602.04/21,105.05
6. Step 6: Final answer
   x = 10,586.45