Finding the Fourth Proportional to 9,677.34, 13,353.53 and 5,428.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,677.34 : 13,353.53 = 5,428.01 : x
2. Step 2: Convert to fraction form
   9,677.34/13,353.53 = 5,428.01/x
3. Step 3: Cross multiply
   9,677.34x = 13,353.53 × 5,428.01
4. Step 4: Simplify right side
   9,677.34x = 72,483,100.62
5. Step 5: Solve for x
   x = 72,483,100.62/9,677.34
6. Step 6: Final answer
   x = 7,489.98