Finding the Fourth Proportional to 13,200.03, 19,800.63 and 4,878.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,200.03 : 19,800.63 = 4,878.50 : x
2. Step 2: Convert to fraction form
   13,200.03/19,800.63 = 4,878.50/x
3. Step 3: Cross multiply
   13,200.03x = 19,800.63 × 4,878.50
4. Step 4: Simplify right side
   13,200.03x = 96,597,274.45
5. Step 5: Solve for x
   x = 96,597,274.45/13,200.03
6. Step 6: Final answer
   x = 7,317.96