Finding the Fourth Proportional to 10,068.42, 15,107.13 and 5,135.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,068.42 : 15,107.13 = 5,135.46 : x
2. Step 2: Convert to fraction form
   10,068.42/15,107.13 = 5,135.46/x
3. Step 3: Cross multiply
   10,068.42x = 15,107.13 × 5,135.46
4. Step 4: Simplify right side
   10,068.42x = 77,582,061.83
5. Step 5: Solve for x
   x = 77,582,061.83/10,068.42
6. Step 6: Final answer
   x = 7,705.49