Finding the Fourth Proportional to 12,672.45, 19,011.39 and 3,788.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,672.45 : 19,011.39 = 3,788.47 : x
2. Step 2: Convert to fraction form
   12,672.45/19,011.39 = 3,788.47/x
3. Step 3: Cross multiply
   12,672.45x = 19,011.39 × 3,788.47
4. Step 4: Simplify right side
   12,672.45x = 72,024,090.23
5. Step 5: Solve for x
   x = 72,024,090.23/12,672.45
6. Step 6: Final answer
   x = 5,683.52