Finding the Fourth Proportional to 10,607.60, 15,917.52 and 5,679.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,607.60 : 15,917.52 = 5,679.99 : x
2. Step 2: Convert to fraction form
   10,607.60/15,917.52 = 5,679.99/x
3. Step 3: Cross multiply
   10,607.60x = 15,917.52 × 5,679.99
4. Step 4: Simplify right side
   10,607.60x = 90,411,354.42
5. Step 5: Solve for x
   x = 90,411,354.42/10,607.60
6. Step 6: Final answer
   x = 8,523.27