Finding the Fourth Proportional to 13,380.77, 18,465.59 and 7,412.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,380.77 : 18,465.59 = 7,412.52 : x
2. Step 2: Convert to fraction form
   13,380.77/18,465.59 = 7,412.52/x
3. Step 3: Cross multiply
   13,380.77x = 18,465.59 × 7,412.52
4. Step 4: Simplify right side
   13,380.77x = 136,876,573.72
5. Step 5: Solve for x
   x = 136,876,573.72/13,380.77
6. Step 6: Final answer
   x = 10,229.35