Finding the Fourth Proportional to 12,531.02, 18,785.34 and 4,745.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,531.02 : 18,785.34 = 4,745.30 : x
2. Step 2: Convert to fraction form
   12,531.02/18,785.34 = 4,745.30/x
3. Step 3: Cross multiply
   12,531.02x = 18,785.34 × 4,745.30
4. Step 4: Simplify right side
   12,531.02x = 89,142,073.90
5. Step 5: Solve for x
   x = 89,142,073.90/12,531.02
6. Step 6: Final answer
   x = 7,113.71