Finding the Fourth Proportional to 28,469.83, 42,704.82 and 8,748.35

Step by Step Solution

1. Step 1: Write the proportion equation
   28,469.83 : 42,704.82 = 8,748.35 : x
2. Step 2: Convert to fraction form
   28,469.83/42,704.82 = 8,748.35/x
3. Step 3: Cross multiply
   28,469.83x = 42,704.82 × 8,748.35
4. Step 4: Simplify right side
   28,469.83x = 373,596,818.81
5. Step 5: Solve for x
   x = 373,596,818.81/28,469.83
6. Step 6: Final answer
   x = 13,122.55