Finding the Fourth Proportional to 9,771.45, 13,490.72 and 7,529.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,771.45 : 13,490.72 = 7,529.07 : x
2. Step 2: Convert to fraction form
   9,771.45/13,490.72 = 7,529.07/x
3. Step 3: Cross multiply
   9,771.45x = 13,490.72 × 7,529.07
4. Step 4: Simplify right side
   9,771.45x = 101,572,575.23
5. Step 5: Solve for x
   x = 101,572,575.23/9,771.45
6. Step 6: Final answer
   x = 10,394.83