Finding the Fourth Proportional to 10,959.58, 15,144.15 and 7,810.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,959.58 : 15,144.15 = 7,810.30 : x
2. Step 2: Convert to fraction form
   10,959.58/15,144.15 = 7,810.30/x
3. Step 3: Cross multiply
   10,959.58x = 15,144.15 × 7,810.30
4. Step 4: Simplify right side
   10,959.58x = 118,280,354.75
5. Step 5: Solve for x
   x = 118,280,354.75/10,959.58
6. Step 6: Final answer
   x = 10,792.42