Finding the Fourth Proportional to 9,900.17, 13,662.23 and 5,423.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,900.17 : 13,662.23 = 5,423.82 : x
2. Step 2: Convert to fraction form
   9,900.17/13,662.23 = 5,423.82/x
3. Step 3: Cross multiply
   9,900.17x = 13,662.23 × 5,423.82
4. Step 4: Simplify right side
   9,900.17x = 74,101,476.32
5. Step 5: Solve for x
   x = 74,101,476.32/9,900.17
6. Step 6: Final answer
   x = 7,484.87