Finding the Fourth Proportional to 18,404.31, 27,605.89 and 5,256.70

Step by Step Solution

1. Step 1: Write the proportion equation
   18,404.31 : 27,605.89 = 5,256.70 : x
2. Step 2: Convert to fraction form
   18,404.31/27,605.89 = 5,256.70/x
3. Step 3: Cross multiply
   18,404.31x = 27,605.89 × 5,256.70
4. Step 4: Simplify right side
   18,404.31x = 145,115,881.96
5. Step 5: Solve for x
   x = 145,115,881.96/18,404.31
6. Step 6: Final answer
   x = 7,884.89