Finding the Fourth Proportional to 9,807.63, 13,533.12 and 5,772.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,807.63 : 13,533.12 = 5,772.06 : x
2. Step 2: Convert to fraction form
   9,807.63/13,533.12 = 5,772.06/x
3. Step 3: Cross multiply
   9,807.63x = 13,533.12 × 5,772.06
4. Step 4: Simplify right side
   9,807.63x = 78,113,980.63
5. Step 5: Solve for x
   x = 78,113,980.63/9,807.63
6. Step 6: Final answer
   x = 7,964.61