Finding the Fourth Proportional to 13,580.69, 18,741.32 and 7,612.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,580.69 : 18,741.32 = 7,612.35 : x
2. Step 2: Convert to fraction form
   13,580.69/18,741.32 = 7,612.35/x
3. Step 3: Cross multiply
   13,580.69x = 18,741.32 × 7,612.35
4. Step 4: Simplify right side
   13,580.69x = 142,665,608.46
5. Step 5: Solve for x
   x = 142,665,608.46/13,580.69
6. Step 6: Final answer
   x = 10,505.04