Finding the Fourth Proportional to 8,780.16, 12,112.56 and 5,052

Step by Step Solution

1. Step 1: Write the proportion equation
   8,780.16 : 12,112.56 = 5,052 : x
2. Step 2: Convert to fraction form
   8,780.16/12,112.56 = 5,052/x
3. Step 3: Cross multiply
   8,780.16x = 12,112.56 × 5,052
4. Step 4: Simplify right side
   8,780.16x = 61,192,653.12
5. Step 5: Solve for x
   x = 61,192,653.12/8,780.16
6. Step 6: Final answer
   x = 6,969.42