Finding the Fourth Proportional to 46,290.72, 69,439.68 and 13,013.52

Step by Step Solution

1. Step 1: Write the proportion equation
   46,290.72 : 69,439.68 = 13,013.52 : x
2. Step 2: Convert to fraction form
   46,290.72/69,439.68 = 13,013.52/x
3. Step 3: Cross multiply
   46,290.72x = 69,439.68 × 13,013.52
4. Step 4: Simplify right side
   46,290.72x = 903,654,664.47
5. Step 5: Solve for x
   x = 903,654,664.47/46,290.72
6. Step 6: Final answer
   x = 19,521.29