Finding the Fourth Proportional to 8,075.31, 12,110.75 and 5,109.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,075.31 : 12,110.75 = 5,109.29 : x
2. Step 2: Convert to fraction form
   8,075.31/12,110.75 = 5,109.29/x
3. Step 3: Cross multiply
   8,075.31x = 12,110.75 × 5,109.29
4. Step 4: Simplify right side
   8,075.31x = 61,877,333.87
5. Step 5: Solve for x
   x = 61,877,333.87/8,075.31
6. Step 6: Final answer
   x = 7,662.53