Finding the Fourth Proportional to 13,406.37, 18,499.91 and 7,437.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,406.37 : 18,499.91 = 7,437.84 : x
2. Step 2: Convert to fraction form
   13,406.37/18,499.91 = 7,437.84/x
3. Step 3: Cross multiply
   13,406.37x = 18,499.91 × 7,437.84
4. Step 4: Simplify right side
   13,406.37x = 137,599,333.41
5. Step 5: Solve for x
   x = 137,599,333.41/13,406.37
6. Step 6: Final answer
   x = 10,263.73