Finding the Fourth Proportional to 9,203.60, 13,807.35 and 5,256.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,203.60 : 13,807.35 = 5,256.72 : x
2. Step 2: Convert to fraction form
   9,203.60/13,807.35 = 5,256.72/x
3. Step 3: Cross multiply
   9,203.60x = 13,807.35 × 5,256.72
4. Step 4: Simplify right side
   9,203.60x = 72,581,372.89
5. Step 5: Solve for x
   x = 72,581,372.89/9,203.60
6. Step 6: Final answer
   x = 7,886.19