Finding the Fourth Proportional to 28,369.55, 42,580.61 and 14,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,369.55 : 42,580.61 = 14,339.50 : x
2. Step 2: Convert to fraction form
   28,369.55/42,580.61 = 14,339.50/x
3. Step 3: Cross multiply
   28,369.55x = 42,580.61 × 14,339.50
4. Step 4: Simplify right side
   28,369.55x = 610,584,532.72
5. Step 5: Solve for x
   x = 610,584,532.72/28,369.55
6. Step 6: Final answer
   x = 21,522.53