Finding the Fourth Proportional to 10,321.63, 15,487.74 and 5,056.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,321.63 : 15,487.74 = 5,056.54 : x
2. Step 2: Convert to fraction form
   10,321.63/15,487.74 = 5,056.54/x
3. Step 3: Cross multiply
   10,321.63x = 15,487.74 × 5,056.54
4. Step 4: Simplify right side
   10,321.63x = 78,314,376.82
5. Step 5: Solve for x
   x = 78,314,376.82/10,321.63
6. Step 6: Final answer
   x = 7,587.40