Finding the Fourth Proportional to 9,810.80, 13,538.89 and 5,334.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,810.80 : 13,538.89 = 5,334.58 : x
2. Step 2: Convert to fraction form
   9,810.80/13,538.89 = 5,334.58/x
3. Step 3: Cross multiply
   9,810.80x = 13,538.89 × 5,334.58
4. Step 4: Simplify right side
   9,810.80x = 72,224,291.82
5. Step 5: Solve for x
   x = 72,224,291.82/9,810.80
6. Step 6: Final answer
   x = 7,361.71