Finding the Fourth Proportional to 13,821.91, 19,074.50 and 7,534.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,821.91 : 19,074.50 = 7,534.29 : x
2. Step 2: Convert to fraction form
   13,821.91/19,074.50 = 7,534.29/x
3. Step 3: Cross multiply
   13,821.91x = 19,074.50 × 7,534.29
4. Step 4: Simplify right side
   13,821.91x = 143,712,814.61
5. Step 5: Solve for x
   x = 143,712,814.61/13,821.91
6. Step 6: Final answer
   x = 10,397.46