Finding the Fourth Proportional to 9,882.85, 13,638.28 and 5,406.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,882.85 : 13,638.28 = 5,406.52 : x
2. Step 2: Convert to fraction form
   9,882.85/13,638.28 = 5,406.52/x
3. Step 3: Cross multiply
   9,882.85x = 13,638.28 × 5,406.52
4. Step 4: Simplify right side
   9,882.85x = 73,735,538.36
5. Step 5: Solve for x
   x = 73,735,538.36/9,882.85
6. Step 6: Final answer
   x = 7,460.96