Finding the Fourth Proportional to 13,320.06, 19,981.17 and 4,435.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,320.06 : 19,981.17 = 4,435.07 : x
2. Step 2: Convert to fraction form
   13,320.06/19,981.17 = 4,435.07/x
3. Step 3: Cross multiply
   13,320.06x = 19,981.17 × 4,435.07
4. Step 4: Simplify right side
   13,320.06x = 88,617,826.59
5. Step 5: Solve for x
   x = 88,617,826.59/13,320.06
6. Step 6: Final answer
   x = 6,652.96