Finding the Fourth Proportional to 12,012.63, 17,987.48 and 8,483.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,012.63 : 17,987.48 = 8,483.55 : x
2. Step 2: Convert to fraction form
   12,012.63/17,987.48 = 8,483.55/x
3. Step 3: Cross multiply
   12,012.63x = 17,987.48 × 8,483.55
4. Step 4: Simplify right side
   12,012.63x = 152,597,685.95
5. Step 5: Solve for x
   x = 152,597,685.95/12,012.63
6. Step 6: Final answer
   x = 12,703.10