Finding the Fourth Proportional to 13,049.95, 18,010.86 and 7,672.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,049.95 : 18,010.86 = 7,672.16 : x
2. Step 2: Convert to fraction form
   13,049.95/18,010.86 = 7,672.16/x
3. Step 3: Cross multiply
   13,049.95x = 18,010.86 × 7,672.16
4. Step 4: Simplify right side
   13,049.95x = 138,182,109.60
5. Step 5: Solve for x
   x = 138,182,109.60/13,049.95
6. Step 6: Final answer
   x = 10,588.71