Finding the Fourth Proportional to 14,074.61, 21,105.70 and 7,499.39

Step by Step Solution

1. Step 1: Write the proportion equation
   14,074.61 : 21,105.70 = 7,499.39 : x
2. Step 2: Convert to fraction form
   14,074.61/21,105.70 = 7,499.39/x
3. Step 3: Cross multiply
   14,074.61x = 21,105.70 × 7,499.39
4. Step 4: Simplify right side
   14,074.61x = 158,279,751.25
5. Step 5: Solve for x
   x = 158,279,751.25/14,074.61
6. Step 6: Final answer
   x = 11,245.77