Finding the Fourth Proportional to 28,870.56, 39,838.50 and 16,292.88

Step by Step Solution

1. Step 1: Write the proportion equation
   28,870.56 : 39,838.50 = 16,292.88 : x
2. Step 2: Convert to fraction form
   28,870.56/39,838.50 = 16,292.88/x
3. Step 3: Cross multiply
   28,870.56x = 39,838.50 × 16,292.88
4. Step 4: Simplify right side
   28,870.56x = 649,083,899.88
5. Step 5: Solve for x
   x = 649,083,899.88/28,870.56
6. Step 6: Final answer
   x = 22,482.55