Finding the Fourth Proportional to 12,144,437.81, 18,213,969.61 and 3,506,663.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,144,437.81 : 18,213,969.61 = 3,506,663.30 : x
2. Step 2: Convert to fraction form
   12,144,437.81/18,213,969.61 = 3,506,663.30/x
3. Step 3: Cross multiply
   12,144,437.81x = 18,213,969.61 × 3,506,663.30
4. Step 4: Simplify right side
   12,144,437.81x = 63,870,258,696,399.12
5. Step 5: Solve for x
   x = 63,870,258,696,399.12/12,144,437.81
6. Step 6: Final answer
   x = 5,259,219.05