Finding the Fourth Proportional to 9,677.67, 13,353.69 and 5,428.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,677.67 : 13,353.69 = 5,428.95 : x
2. Step 2: Convert to fraction form
   9,677.67/13,353.69 = 5,428.95/x
3. Step 3: Cross multiply
   9,677.67x = 13,353.69 × 5,428.95
4. Step 4: Simplify right side
   9,677.67x = 72,496,515.33
5. Step 5: Solve for x
   x = 72,496,515.33/9,677.67
6. Step 6: Final answer
   x = 7,491.11