Finding the Fourth Proportional to 9,035.79, 13,580.42 and 7,485.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,035.79 : 13,580.42 = 7,485.72 : x
2. Step 2: Convert to fraction form
   9,035.79/13,580.42 = 7,485.72/x
3. Step 3: Cross multiply
   9,035.79x = 13,580.42 × 7,485.72
4. Step 4: Simplify right side
   9,035.79x = 101,659,184.17
5. Step 5: Solve for x
   x = 101,659,184.17/9,035.79
6. Step 6: Final answer
   x = 11,250.72