Finding the Fourth Proportional to 12,888.37, 19,332.42 and 5,870.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,888.37 : 19,332.42 = 5,870.80 : x
2. Step 2: Convert to fraction form
   12,888.37/19,332.42 = 5,870.80/x
3. Step 3: Cross multiply
   12,888.37x = 19,332.42 × 5,870.80
4. Step 4: Simplify right side
   12,888.37x = 113,496,771.34
5. Step 5: Solve for x
   x = 113,496,771.34/12,888.37
6. Step 6: Final answer
   x = 8,806.14