Finding the Fourth Proportional to 8,820.06, 13,225.91 and 5,123.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,820.06 : 13,225.91 = 5,123.45 : x
2. Step 2: Convert to fraction form
   8,820.06/13,225.91 = 5,123.45/x
3. Step 3: Cross multiply
   8,820.06x = 13,225.91 × 5,123.45
4. Step 4: Simplify right side
   8,820.06x = 67,762,196.84
5. Step 5: Solve for x
   x = 67,762,196.84/8,820.06
6. Step 6: Final answer
   x = 7,682.74