Finding the Fourth Proportional to 13,557.17, 18,708.71 and 7,588.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,557.17 : 18,708.71 = 7,588.84 : x
2. Step 2: Convert to fraction form
   13,557.17/18,708.71 = 7,588.84/x
3. Step 3: Cross multiply
   13,557.17x = 18,708.71 × 7,588.84
4. Step 4: Simplify right side
   13,557.17x = 141,977,406.80
5. Step 5: Solve for x
   x = 141,977,406.80/13,557.17
6. Step 6: Final answer
   x = 10,472.50