Finding the Fourth Proportional to 13,528.07, 18,667.52 and 7,558.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,528.07 : 18,667.52 = 7,558.91 : x
2. Step 2: Convert to fraction form
   13,528.07/18,667.52 = 7,558.91/x
3. Step 3: Cross multiply
   13,528.07x = 18,667.52 × 7,558.91
4. Step 4: Simplify right side
   13,528.07x = 141,106,103.60
5. Step 5: Solve for x
   x = 141,106,103.60/13,528.07
6. Step 6: Final answer
   x = 10,430.62