Finding the Fourth Proportional to 8,534.18, 12,779.89 and 5,404.75

Step by Step Solution

1. Step 1: Write the proportion equation
   8,534.18 : 12,779.89 = 5,404.75 : x
2. Step 2: Convert to fraction form
   8,534.18/12,779.89 = 5,404.75/x
3. Step 3: Cross multiply
   8,534.18x = 12,779.89 × 5,404.75
4. Step 4: Simplify right side
   8,534.18x = 69,072,110.48
5. Step 5: Solve for x
   x = 69,072,110.48/8,534.18
6. Step 6: Final answer
   x = 8,093.58