Finding the Fourth Proportional to 10,358.31, 14,293.98 and 5,642.58

Step by Step Solution

1. Step 1: Write the proportion equation
   10,358.31 : 14,293.98 = 5,642.58 : x
2. Step 2: Convert to fraction form
   10,358.31/14,293.98 = 5,642.58/x
3. Step 3: Cross multiply
   10,358.31x = 14,293.98 × 5,642.58
4. Step 4: Simplify right side
   10,358.31x = 80,654,925.67
5. Step 5: Solve for x
   x = 80,654,925.67/10,358.31
6. Step 6: Final answer
   x = 7,786.49