Finding the Fourth Proportional to 19,495.52, 29,240.40 and 5,642.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,495.52 : 29,240.40 = 5,642.72 : x
2. Step 2: Convert to fraction form
   19,495.52/29,240.40 = 5,642.72/x
3. Step 3: Cross multiply
   19,495.52x = 29,240.40 × 5,642.72
4. Step 4: Simplify right side
   19,495.52x = 164,995,389.89
5. Step 5: Solve for x
   x = 164,995,389.89/19,495.52
6. Step 6: Final answer
   x = 8,463.25