Finding the Fourth Proportional to 9,820.16, 13,545.71 and 5,990.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,820.16 : 13,545.71 = 5,990.05 : x
2. Step 2: Convert to fraction form
   9,820.16/13,545.71 = 5,990.05/x
3. Step 3: Cross multiply
   9,820.16x = 13,545.71 × 5,990.05
4. Step 4: Simplify right side
   9,820.16x = 81,139,507.19
5. Step 5: Solve for x
   x = 81,139,507.19/9,820.16
6. Step 6: Final answer
   x = 8,262.54