Finding the Fourth Proportional to 21,105.01, 31,658.95 and 7,064.47

Step by Step Solution

1. Step 1: Write the proportion equation
   21,105.01 : 31,658.95 = 7,064.47 : x
2. Step 2: Convert to fraction form
   21,105.01/31,658.95 = 7,064.47/x
3. Step 3: Cross multiply
   21,105.01x = 31,658.95 × 7,064.47
4. Step 4: Simplify right side
   21,105.01x = 223,653,572.83
5. Step 5: Solve for x
   x = 223,653,572.83/21,105.01
6. Step 6: Final answer
   x = 10,597.18