Finding the Fourth Proportional to 10,521.54, 15,779.58 and 3,124.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,521.54 : 15,779.58 = 3,124.32 : x
2. Step 2: Convert to fraction form
   10,521.54/15,779.58 = 3,124.32/x
3. Step 3: Cross multiply
   10,521.54x = 15,779.58 × 3,124.32
4. Step 4: Simplify right side
   10,521.54x = 49,300,457.39
5. Step 5: Solve for x
   x = 49,300,457.39/10,521.54
6. Step 6: Final answer
   x = 4,685.67