Finding the Fourth Proportional to 21,061.45, 31,591.86 and 6,270.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.45 : 31,591.86 = 6,270.46 : x
2. Step 2: Convert to fraction form
   21,061.45/31,591.86 = 6,270.46/x
3. Step 3: Cross multiply
   21,061.45x = 31,591.86 × 6,270.46
4. Step 4: Simplify right side
   21,061.45x = 198,095,494.46
5. Step 5: Solve for x
   x = 198,095,494.46/21,061.45
6. Step 6: Final answer
   x = 9,405.60