Finding the Fourth Proportional to 13,499.60, 18,630.02 and 7,531.26

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.60 : 18,630.02 = 7,531.26 : x
2. Step 2: Convert to fraction form
   13,499.60/18,630.02 = 7,531.26/x
3. Step 3: Cross multiply
   13,499.60x = 18,630.02 × 7,531.26
4. Step 4: Simplify right side
   13,499.60x = 140,307,535.82
5. Step 5: Solve for x
   x = 140,307,535.82/13,499.60
6. Step 6: Final answer
   x = 10,393.46