Finding the Fourth Proportional to 13,468.61, 18,586.63 and 7,500.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,468.61 : 18,586.63 = 7,500.35 : x
2. Step 2: Convert to fraction form
   13,468.61/18,586.63 = 7,500.35/x
3. Step 3: Cross multiply
   13,468.61x = 18,586.63 × 7,500.35
4. Step 4: Simplify right side
   13,468.61x = 139,406,230.32
5. Step 5: Solve for x
   x = 139,406,230.32/13,468.61
6. Step 6: Final answer
   x = 10,350.45