Finding the Fourth Proportional to 7,810.88, 10,779.55 and 5,153.67

Step by Step Solution

1. Step 1: Write the proportion equation
   7,810.88 : 10,779.55 = 5,153.67 : x
2. Step 2: Convert to fraction form
   7,810.88/10,779.55 = 5,153.67/x
3. Step 3: Cross multiply
   7,810.88x = 10,779.55 × 5,153.67
4. Step 4: Simplify right side
   7,810.88x = 55,554,230.56
5. Step 5: Solve for x
   x = 55,554,230.56/7,810.88
6. Step 6: Final answer
   x = 7,112.42