Finding the Fourth Proportional to 12,100.19, 18,145.69 and 4,703.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,100.19 : 18,145.69 = 4,703.74 : x
2. Step 2: Convert to fraction form
   12,100.19/18,145.69 = 4,703.74/x
3. Step 3: Cross multiply
   12,100.19x = 18,145.69 × 4,703.74
4. Step 4: Simplify right side
   12,100.19x = 85,352,550.76
5. Step 5: Solve for x
   x = 85,352,550.76/12,100.19
6. Step 6: Final answer
   x = 7,053.82