Finding the Fourth Proportional to 13,404.78, 18,499.01 and 7,437.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,404.78 : 18,499.01 = 7,437.02 : x
2. Step 2: Convert to fraction form
   13,404.78/18,499.01 = 7,437.02/x
3. Step 3: Cross multiply
   13,404.78x = 18,499.01 × 7,437.02
4. Step 4: Simplify right side
   13,404.78x = 137,577,377.67
5. Step 5: Solve for x
   x = 137,577,377.67/13,404.78
6. Step 6: Final answer
   x = 10,263.31