Finding the Fourth Proportional to 13,128.42, 19,684.71 and 5,232.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,128.42 : 19,684.71 = 5,232.15 : x
2. Step 2: Convert to fraction form
   13,128.42/19,684.71 = 5,232.15/x
3. Step 3: Cross multiply
   13,128.42x = 19,684.71 × 5,232.15
4. Step 4: Simplify right side
   13,128.42x = 102,993,355.43
5. Step 5: Solve for x
   x = 102,993,355.43/13,128.42
6. Step 6: Final answer
   x = 7,845.07