Finding the Fourth Proportional to 13,818.32, 19,069.42 and 7,530.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,818.32 : 19,069.42 = 7,530.72 : x
2. Step 2: Convert to fraction form
   13,818.32/19,069.42 = 7,530.72/x
3. Step 3: Cross multiply
   13,818.32x = 19,069.42 × 7,530.72
4. Step 4: Simplify right side
   13,818.32x = 143,606,462.58
5. Step 5: Solve for x
   x = 143,606,462.58/13,818.32
6. Step 6: Final answer
   x = 10,392.47