Finding the Fourth Proportional to 21,071.38, 31,603.65 and 7,030.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,071.38 : 31,603.65 = 7,030.84 : x
2. Step 2: Convert to fraction form
   21,071.38/31,603.65 = 7,030.84/x
3. Step 3: Cross multiply
   21,071.38x = 31,603.65 × 7,030.84
4. Step 4: Simplify right side
   21,071.38x = 222,200,206.57
5. Step 5: Solve for x
   x = 222,200,206.57/21,071.38
6. Step 6: Final answer
   x = 10,545.12