Finding the Fourth Proportional to 12,602.45, 18,903.72 and 5,106.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,602.45 : 18,903.72 = 5,106.15 : x
2. Step 2: Convert to fraction form
   12,602.45/18,903.72 = 5,106.15/x
3. Step 3: Cross multiply
   12,602.45x = 18,903.72 × 5,106.15
4. Step 4: Simplify right side
   12,602.45x = 96,525,229.88
5. Step 5: Solve for x
   x = 96,525,229.88/12,602.45
6. Step 6: Final answer
   x = 7,659.24