Finding the Fourth Proportional to 13,077.21, 18,046.86 and 7,412.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,077.21 : 18,046.86 = 7,412.54 : x
2. Step 2: Convert to fraction form
   13,077.21/18,046.86 = 7,412.54/x
3. Step 3: Cross multiply
   13,077.21x = 18,046.86 × 7,412.54
4. Step 4: Simplify right side
   13,077.21x = 133,773,071.62
5. Step 5: Solve for x
   x = 133,773,071.62/13,077.21
6. Step 6: Final answer
   x = 10,229.48