Finding the Fourth Proportional to 8,870.31, 13,283.60 and 5,575.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870.31 : 13,283.60 = 5,575.23 : x
2. Step 2: Convert to fraction form
   8,870.31/13,283.60 = 5,575.23/x
3. Step 3: Cross multiply
   8,870.31x = 13,283.60 × 5,575.23
4. Step 4: Simplify right side
   8,870.31x = 74,059,097.35
5. Step 5: Solve for x
   x = 74,059,097.35/8,870.31
6. Step 6: Final answer
   x = 8,349.10