Finding the Fourth Proportional to 7,844.45, 10,812.89 and 7,688.93

Step by Step Solution

1. Step 1: Write the proportion equation
   7,844.45 : 10,812.89 = 7,688.93 : x
2. Step 2: Convert to fraction form
   7,844.45/10,812.89 = 7,688.93/x
3. Step 3: Cross multiply
   7,844.45x = 10,812.89 × 7,688.93
4. Step 4: Simplify right side
   7,844.45x = 83,139,519.47
5. Step 5: Solve for x
   x = 83,139,519.47/7,844.45
6. Step 6: Final answer
   x = 10,598.52