Finding the Fourth Proportional to 9,687.57, 13,368.27 and 5,437.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,687.57 : 13,368.27 = 5,437.74 : x
2. Step 2: Convert to fraction form
   9,687.57/13,368.27 = 5,437.74/x
3. Step 3: Cross multiply
   9,687.57x = 13,368.27 × 5,437.74
4. Step 4: Simplify right side
   9,687.57x = 72,693,176.51
5. Step 5: Solve for x
   x = 72,693,176.51/9,687.57
6. Step 6: Final answer
   x = 7,503.76