Finding the Fourth Proportional to 10,877.55, 15,005.94 and 7,690.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,877.55 : 15,005.94 = 7,690.88 : x
2. Step 2: Convert to fraction form
   10,877.55/15,005.94 = 7,690.88/x
3. Step 3: Cross multiply
   10,877.55x = 15,005.94 × 7,690.88
4. Step 4: Simplify right side
   10,877.55x = 115,408,883.83
5. Step 5: Solve for x
   x = 115,408,883.83/10,877.55
6. Step 6: Final answer
   x = 10,609.82