Finding the Fourth Proportional to 10,612.79, 14,637.43 and 7,779.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,612.79 : 14,637.43 = 7,779.10 : x
2. Step 2: Convert to fraction form
   10,612.79/14,637.43 = 7,779.10/x
3. Step 3: Cross multiply
   10,612.79x = 14,637.43 × 7,779.10
4. Step 4: Simplify right side
   10,612.79x = 113,866,031.71
5. Step 5: Solve for x
   x = 113,866,031.71/10,612.79
6. Step 6: Final answer
   x = 10,729.13