Finding the Fourth Proportional to 10,312.56, 15,456.15 and 4,758.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,312.56 : 15,456.15 = 4,758.39 : x
2. Step 2: Convert to fraction form
   10,312.56/15,456.15 = 4,758.39/x
3. Step 3: Cross multiply
   10,312.56x = 15,456.15 × 4,758.39
4. Step 4: Simplify right side
   10,312.56x = 73,546,389.60
5. Step 5: Solve for x
   x = 73,546,389.60/10,312.56
6. Step 6: Final answer
   x = 7,131.73