Finding the Fourth Proportional to 22,064.55, 30,449.82 and 12,988.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,064.55 : 30,449.82 = 12,988.27 : x
2. Step 2: Convert to fraction form
   22,064.55/30,449.82 = 12,988.27/x
3. Step 3: Cross multiply
   22,064.55x = 30,449.82 × 12,988.27
4. Step 4: Simplify right side
   22,064.55x = 395,490,483.61
5. Step 5: Solve for x
   x = 395,490,483.61/22,064.55
6. Step 6: Final answer
   x = 17,924.25