Finding the Fourth Proportional to 13,385.51, 18,471.72 and 7,416.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,385.51 : 18,471.72 = 7,416.82 : x
2. Step 2: Convert to fraction form
   13,385.51/18,471.72 = 7,416.82/x
3. Step 3: Cross multiply
   13,385.51x = 18,471.72 × 7,416.82
4. Step 4: Simplify right side
   13,385.51x = 137,001,422.33
5. Step 5: Solve for x
   x = 137,001,422.33/13,385.51
6. Step 6: Final answer
   x = 10,235.05