Finding the Fourth Proportional to 9,980.84, 14,942.28 and 5,808.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980.84 : 14,942.28 = 5,808.12 : x
2. Step 2: Convert to fraction form
   9,980.84/14,942.28 = 5,808.12/x
3. Step 3: Cross multiply
   9,980.84x = 14,942.28 × 5,808.12
4. Step 4: Simplify right side
   9,980.84x = 86,786,555.31
5. Step 5: Solve for x
   x = 86,786,555.31/9,980.84
6. Step 6: Final answer
   x = 8,695.32