Finding the Fourth Proportional to 2,213,120.10, 3,319,680.15 and 2,199,123.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213,120.10 : 3,319,680.15 = 2,199,123.30 : x
2. Step 2: Convert to fraction form
   2,213,120.10/3,319,680.15 = 2,199,123.30/x
3. Step 3: Cross multiply
   2,213,120.10x = 3,319,680.15 × 2,199,123.30
4. Step 4: Simplify right side
   2,213,120.10x = 7,300,385,966,412.49
5. Step 5: Solve for x
   x = 7,300,385,966,412.49/2,213,120.10
6. Step 6: Final answer
   x = 3,298,684.95