Finding the Fourth Proportional to 9,699.34, 13,385.28 and 7,577.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,699.34 : 13,385.28 = 7,577.34 : x
2. Step 2: Convert to fraction form
   9,699.34/13,385.28 = 7,577.34/x
3. Step 3: Cross multiply
   9,699.34x = 13,385.28 × 7,577.34
4. Step 4: Simplify right side
   9,699.34x = 101,424,817.56
5. Step 5: Solve for x
   x = 101,424,817.56/9,699.34
6. Step 6: Final answer
   x = 10,456.88