Finding the Fourth Proportional to 10,620.48, 14,723.04 and 10,058.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,620.48 : 14,723.04 = 10,058.40 : x
2. Step 2: Convert to fraction form
   10,620.48/14,723.04 = 10,058.40/x
3. Step 3: Cross multiply
   10,620.48x = 14,723.04 × 10,058.40
4. Step 4: Simplify right side
   10,620.48x = 148,090,225.54
5. Step 5: Solve for x
   x = 148,090,225.54/10,620.48
6. Step 6: Final answer
   x = 13,943.84