Finding the Fourth Proportional to 13,155.59, 18,152.72 and 7,490.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,155.59 : 18,152.72 = 7,490.58 : x
2. Step 2: Convert to fraction form
   13,155.59/18,152.72 = 7,490.58/x
3. Step 3: Cross multiply
   13,155.59x = 18,152.72 × 7,490.58
4. Step 4: Simplify right side
   13,155.59x = 135,974,392.01
5. Step 5: Solve for x
   x = 135,974,392.01/13,155.59
6. Step 6: Final answer
   x = 10,335.86