Finding the Fourth Proportional to 13,188.64, 18,200.82 and 7,524.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,188.64 : 18,200.82 = 7,524.31 : x
2. Step 2: Convert to fraction form
   13,188.64/18,200.82 = 7,524.31/x
3. Step 3: Cross multiply
   13,188.64x = 18,200.82 × 7,524.31
4. Step 4: Simplify right side
   13,188.64x = 136,948,611.93
5. Step 5: Solve for x
   x = 136,948,611.93/13,188.64
6. Step 6: Final answer
   x = 10,383.83