Finding the Fourth Proportional to 13,830.16, 19,085.56 and 7,542.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,830.16 : 19,085.56 = 7,542.52 : x
2. Step 2: Convert to fraction form
   13,830.16/19,085.56 = 7,542.52/x
3. Step 3: Cross multiply
   13,830.16x = 19,085.56 × 7,542.52
4. Step 4: Simplify right side
   13,830.16x = 143,953,218.01
5. Step 5: Solve for x
   x = 143,953,218.01/13,830.16
6. Step 6: Final answer
   x = 10,408.64