Finding the Fourth Proportional to 9,499.61, 13,113.12 and 8,503.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,499.61 : 13,113.12 = 8,503.13 : x
2. Step 2: Convert to fraction form
   9,499.61/13,113.12 = 8,503.13/x
3. Step 3: Cross multiply
   9,499.61x = 13,113.12 × 8,503.13
4. Step 4: Simplify right side
   9,499.61x = 111,502,564.07
5. Step 5: Solve for x
   x = 111,502,564.07/9,499.61
6. Step 6: Final answer
   x = 11,737.59