Finding the Fourth Proportional to 13,375.33, 18,457.71 and 7,406.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,375.33 : 18,457.71 = 7,406.98 : x
2. Step 2: Convert to fraction form
   13,375.33/18,457.71 = 7,406.98/x
3. Step 3: Cross multiply
   13,375.33x = 18,457.71 × 7,406.98
4. Step 4: Simplify right side
   13,375.33x = 136,715,888.82
5. Step 5: Solve for x
   x = 136,715,888.82/13,375.33
6. Step 6: Final answer
   x = 10,221.50