Finding the Fourth Proportional to 43,477.09, 65,224.98 and 13,490.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43,477.09 : 65,224.98 = 13,490.72 : x
2. Step 2: Convert to fraction form
   43,477.09/65,224.98 = 13,490.72/x
3. Step 3: Cross multiply
   43,477.09x = 65,224.98 × 13,490.72
4. Step 4: Simplify right side
   43,477.09x = 879,931,860.65
5. Step 5: Solve for x
   x = 879,931,860.65/43,477.09
6. Step 6: Final answer
   x = 20,238.98