Finding the Fourth Proportional to 28,106.34, 38,782.06 and 16,780.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,106.34 : 38,782.06 = 16,780.42 : x
2. Step 2: Convert to fraction form
   28,106.34/38,782.06 = 16,780.42/x
3. Step 3: Cross multiply
   28,106.34x = 38,782.06 × 16,780.42
4. Step 4: Simplify right side
   28,106.34x = 650,779,255.27
5. Step 5: Solve for x
   x = 650,779,255.27/28,106.34
6. Step 6: Final answer
   x = 23,154.18