Finding the Fourth Proportional to 8,780.22, 12,115.35 and 5,053.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,780.22 : 12,115.35 = 5,053.50 : x
2. Step 2: Convert to fraction form
   8,780.22/12,115.35 = 5,053.50/x
3. Step 3: Cross multiply
   8,780.22x = 12,115.35 × 5,053.50
4. Step 4: Simplify right side
   8,780.22x = 61,224,921.23
5. Step 5: Solve for x
   x = 61,224,921.23/8,780.22
6. Step 6: Final answer
   x = 6,973.05