Finding the Fourth Proportional to 9,810.72, 13,538.34 and 5,334.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,810.72 : 13,538.34 = 5,334.12 : x
2. Step 2: Convert to fraction form
   9,810.72/13,538.34 = 5,334.12/x
3. Step 3: Cross multiply
   9,810.72x = 13,538.34 × 5,334.12
4. Step 4: Simplify right side
   9,810.72x = 72,215,130.16
5. Step 5: Solve for x
   x = 72,215,130.16/9,810.72
6. Step 6: Final answer
   x = 7,360.84