Finding the Fourth Proportional to 10,350.84, 14,300.86 and 7,221

Step by Step Solution

1. Step 1: Write the proportion equation
   10,350.84 : 14,300.86 = 7,221 : x
2. Step 2: Convert to fraction form
   10,350.84/14,300.86 = 7,221/x
3. Step 3: Cross multiply
   10,350.84x = 14,300.86 × 7,221
4. Step 4: Simplify right side
   10,350.84x = 103,266,510.06
5. Step 5: Solve for x
   x = 103,266,510.06/10,350.84
6. Step 6: Final answer
   x = 9,976.63