Finding the Fourth Proportional to 40,960.51, 61,443.53 and 13,931.84

Step by Step Solution

1. Step 1: Write the proportion equation
   40,960.51 : 61,443.53 = 13,931.84 : x
2. Step 2: Convert to fraction form
   40,960.51/61,443.53 = 13,931.84/x
3. Step 3: Cross multiply
   40,960.51x = 61,443.53 × 13,931.84
4. Step 4: Simplify right side
   40,960.51x = 856,021,429.00
5. Step 5: Solve for x
   x = 856,021,429.00/40,960.51
6. Step 6: Final answer
   x = 20,898.70