Finding the Fourth Proportional to 10,084.31, 15,128.09 and 4,242.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,084.31 : 15,128.09 = 4,242.59 : x
2. Step 2: Convert to fraction form
   10,084.31/15,128.09 = 4,242.59/x
3. Step 3: Cross multiply
   10,084.31x = 15,128.09 × 4,242.59
4. Step 4: Simplify right side
   10,084.31x = 64,182,186.50
5. Step 5: Solve for x
   x = 64,182,186.50/10,084.31
6. Step 6: Final answer
   x = 6,364.56