Finding the Fourth Proportional to 11,113.72, 16,674.98 and 4,870.40

Step by Step Solution

1. Step 1: Write the proportion equation
   11,113.72 : 16,674.98 = 4,870.40 : x
2. Step 2: Convert to fraction form
   11,113.72/16,674.98 = 4,870.40/x
3. Step 3: Cross multiply
   11,113.72x = 16,674.98 × 4,870.40
4. Step 4: Simplify right side
   11,113.72x = 81,213,822.59
5. Step 5: Solve for x
   x = 81,213,822.59/11,113.72
6. Step 6: Final answer
   x = 7,307.53