Finding the Fourth Proportional to 13,139,155.98, 19,704,168.81 and 7,312,233.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,139,155.98 : 19,704,168.81 = 7,312,233.06 : x
2. Step 2: Convert to fraction form
   13,139,155.98/19,704,168.81 = 7,312,233.06/x
3. Step 3: Cross multiply
   13,139,155.98x = 19,704,168.81 × 7,312,233.06
4. Step 4: Simplify right side
   13,139,155.98x = 144,081,474,592,302.84
5. Step 5: Solve for x
   x = 144,081,474,592,302.84/13,139,155.98
6. Step 6: Final answer
   x = 10,965,808.98